/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/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:39:42,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:39:42,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:39:42,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 03:39:42,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 03:39:42,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 03:39:42,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 03:39:42,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 03:39:42,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 03:39:42,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 03:39:42,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 03:39:42,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 03:39:42,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:39:42,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:39:42,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:39:42,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:39:42,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:39:42,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:39:42,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:39:42,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:39:42,632 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:39:42,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:39:42,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:39:42,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:39:42,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:39:42,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 03:39:42,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 03:39:42,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 03:39:42,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 03:39:42,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 03:39:42,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 03:39:42,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 03:39:42,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 03:39:42,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 03:39:42,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 03:39:42,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 03:39:42,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 03:39:42,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 03:39:42,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 03:39:42,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:39:42,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:39:42,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:39:42,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:39:42,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:39:42,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:39:42,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:39:42,660 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:39:42,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:39:42,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:39:42,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:39:42,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:39:42,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:39:42,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:39:42,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:39:42,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:39:42,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:39:42,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:39:42,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:39:42,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:39:42,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:39:42,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:39:42,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:39:42,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:39:42,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:39:42,662 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:39:42,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:39:42,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:39:42,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:39:42,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:39:42,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:39:42,869 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:39:42,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2022-03-20 03:39:42,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b7957be/8480a129dd114fedaa59aa12a6414ab7/FLAG387961e50 [2022-03-20 03:39:43,246 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:39:43,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2022-03-20 03:39:43,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b7957be/8480a129dd114fedaa59aa12a6414ab7/FLAG387961e50 [2022-03-20 03:39:43,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b7957be/8480a129dd114fedaa59aa12a6414ab7 [2022-03-20 03:39:43,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:39:43,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:39:43,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:39:43,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:39:43,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:39:43,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:39:43" (1/1) ... [2022-03-20 03:39:43,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555238c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:43, skipping insertion in model container [2022-03-20 03:39:43,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:39:43" (1/1) ... [2022-03-20 03:39:43,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:39:43,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:39:43,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2022-03-20 03:39:43,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:39:44,005 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:39:44,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2022-03-20 03:39:44,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:39:44,113 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:39:44,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44 WrapperNode [2022-03-20 03:39:44,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:39:44,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:39:44,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:39:44,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:39:44,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:39:44,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:39:44,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:39:44,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:39:44,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:39:44,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:39:44,199 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) [2022-03-20 03:39:44,201 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 [2022-03-20 03:39:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:39:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:39:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:39:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 03:39:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:39:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:39:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:39:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:39:44,264 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:39:44,265 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:39:44,704 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:39:44,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:39:44,710 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-20 03:39:44,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:39:44 BoogieIcfgContainer [2022-03-20 03:39:44,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:39:44,712 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:39:44,712 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:39:44,715 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:39:44,717 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:39:44" (1/1) ... [2022-03-20 03:39:44,718 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:39:44,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:39:44 BasicIcfg [2022-03-20 03:39:44,742 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:39:44,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:39:44,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:39:44,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:39:44,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:39:43" (1/4) ... [2022-03-20 03:39:44,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272c478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:39:44, skipping insertion in model container [2022-03-20 03:39:44,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:39:44" (2/4) ... [2022-03-20 03:39:44,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272c478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:39:44, skipping insertion in model container [2022-03-20 03:39:44,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:39:44" (3/4) ... [2022-03-20 03:39:44,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272c478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:39:44, skipping insertion in model container [2022-03-20 03:39:44,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:39:44" (4/4) ... [2022-03-20 03:39:44,759 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.cJordan [2022-03-20 03:39:44,763 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:39:44,763 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:39:44,791 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:39:44,795 INFO L340 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 [2022-03-20 03:39:44,795 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:39:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 143 states have (on average 1.965034965034965) internal successors, (281), 144 states have internal predecessors, (281), 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) [2022-03-20 03:39:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:44,813 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:44,814 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:44,814 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1525673560, now seen corresponding path program 1 times [2022-03-20 03:39:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:44,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761495653] [2022-03-20 03:39:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:45,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761495653] [2022-03-20 03:39:45,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761495653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:45,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:45,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 03:39:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352687486] [2022-03-20 03:39:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:45,107 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 03:39:45,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 03:39:45,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 03:39:45,131 INFO L87 Difference]: Start difference. First operand has 149 states, 143 states have (on average 1.965034965034965) internal successors, (281), 144 states have internal predecessors, (281), 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 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-03-20 03:39:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:45,841 INFO L93 Difference]: Finished difference Result 285 states and 486 transitions. [2022-03-20 03:39:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 03:39:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:45,864 INFO L225 Difference]: With dead ends: 285 [2022-03-20 03:39:45,865 INFO L226 Difference]: Without dead ends: 279 [2022-03-20 03:39:45,866 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 03:39:45,868 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 408 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:45,869 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 22 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 03:39:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-03-20 03:39:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 146. [2022-03-20 03:39:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.4859154929577465) internal successors, (211), 142 states have internal predecessors, (211), 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) [2022-03-20 03:39:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 214 transitions. [2022-03-20 03:39:45,915 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 214 transitions. Word has length 143 [2022-03-20 03:39:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:45,916 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 214 transitions. [2022-03-20 03:39:45,916 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-03-20 03:39:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 214 transitions. [2022-03-20 03:39:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:45,918 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:45,919 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:45,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:39:45,919 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1525703351, now seen corresponding path program 1 times [2022-03-20 03:39:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:45,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898898962] [2022-03-20 03:39:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:46,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:46,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898898962] [2022-03-20 03:39:46,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898898962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:46,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:46,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 03:39:46,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889120169] [2022-03-20 03:39:46,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:46,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 03:39:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:46,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 03:39:46,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 03:39:46,052 INFO L87 Difference]: Start difference. First operand 146 states and 214 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-03-20 03:39:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:46,826 INFO L93 Difference]: Finished difference Result 411 states and 612 transitions. [2022-03-20 03:39:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 03:39:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:46,829 INFO L225 Difference]: With dead ends: 411 [2022-03-20 03:39:46,829 INFO L226 Difference]: Without dead ends: 411 [2022-03-20 03:39:46,829 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 03:39:46,830 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 539 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:46,830 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 16 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 03:39:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-03-20 03:39:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 150. [2022-03-20 03:39:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.4863013698630136) internal successors, (217), 146 states have internal predecessors, (217), 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) [2022-03-20 03:39:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2022-03-20 03:39:46,836 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 143 [2022-03-20 03:39:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:46,836 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2022-03-20 03:39:46,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-03-20 03:39:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2022-03-20 03:39:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:46,838 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:46,838 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:46,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:39:46,838 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1554332502, now seen corresponding path program 1 times [2022-03-20 03:39:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:46,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95283114] [2022-03-20 03:39:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:46,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:46,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95283114] [2022-03-20 03:39:46,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95283114] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:46,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:46,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:39:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079978219] [2022-03-20 03:39:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:46,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:39:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:39:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:39:46,986 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 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) [2022-03-20 03:39:47,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:47,771 INFO L93 Difference]: Finished difference Result 541 states and 807 transitions. [2022-03-20 03:39:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 03:39:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:47,774 INFO L225 Difference]: With dead ends: 541 [2022-03-20 03:39:47,774 INFO L226 Difference]: Without dead ends: 541 [2022-03-20 03:39:47,775 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-20 03:39:47,776 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 601 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:47,776 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 26 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 03:39:47,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-03-20 03:39:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 156. [2022-03-20 03:39:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.486842105263158) internal successors, (226), 152 states have internal predecessors, (226), 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) [2022-03-20 03:39:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 229 transitions. [2022-03-20 03:39:47,782 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 229 transitions. Word has length 143 [2022-03-20 03:39:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:47,783 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 229 transitions. [2022-03-20 03:39:47,783 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 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) [2022-03-20 03:39:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 229 transitions. [2022-03-20 03:39:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:47,784 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:47,784 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:47,784 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 03:39:47,785 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash -997824459, now seen corresponding path program 1 times [2022-03-20 03:39:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:47,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660548282] [2022-03-20 03:39:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:47,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:47,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660548282] [2022-03-20 03:39:47,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660548282] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:47,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:47,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 03:39:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310282253] [2022-03-20 03:39:47,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:47,853 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 03:39:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 03:39:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 03:39:47,854 INFO L87 Difference]: Start difference. First operand 156 states and 229 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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) [2022-03-20 03:39:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:48,790 INFO L93 Difference]: Finished difference Result 669 states and 999 transitions. [2022-03-20 03:39:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 03:39:48,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:48,793 INFO L225 Difference]: With dead ends: 669 [2022-03-20 03:39:48,793 INFO L226 Difference]: Without dead ends: 669 [2022-03-20 03:39:48,793 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-03-20 03:39:48,794 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 861 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 1201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1201 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:48,794 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 21 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1201 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 03:39:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-20 03:39:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 164. [2022-03-20 03:39:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.4875) internal successors, (238), 160 states have internal predecessors, (238), 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) [2022-03-20 03:39:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 241 transitions. [2022-03-20 03:39:48,800 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 241 transitions. Word has length 143 [2022-03-20 03:39:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:48,800 INFO L478 AbstractCegarLoop]: Abstraction has 164 states and 241 transitions. [2022-03-20 03:39:48,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 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) [2022-03-20 03:39:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 241 transitions. [2022-03-20 03:39:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:48,801 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:48,801 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:48,802 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 03:39:48,802 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1194337964, now seen corresponding path program 1 times [2022-03-20 03:39:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:48,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215180937] [2022-03-20 03:39:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:48,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215180937] [2022-03-20 03:39:48,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215180937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:48,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:48,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 03:39:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310671326] [2022-03-20 03:39:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:48,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 03:39:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 03:39:48,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-20 03:39:48,874 INFO L87 Difference]: Start difference. First operand 164 states and 241 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 7 states have internal predecessors, (140), 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) [2022-03-20 03:39:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:50,211 INFO L93 Difference]: Finished difference Result 795 states and 1188 transitions. [2022-03-20 03:39:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 03:39:50,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 7 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:50,214 INFO L225 Difference]: With dead ends: 795 [2022-03-20 03:39:50,214 INFO L226 Difference]: Without dead ends: 795 [2022-03-20 03:39:50,215 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-03-20 03:39:50,215 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 1315 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2121 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:50,216 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 16 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2121 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-20 03:39:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-03-20 03:39:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 174. [2022-03-20 03:39:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.488235294117647) internal successors, (253), 170 states have internal predecessors, (253), 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) [2022-03-20 03:39:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2022-03-20 03:39:50,222 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 143 [2022-03-20 03:39:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:50,222 INFO L478 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2022-03-20 03:39:50,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 7 states have internal predecessors, (140), 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) [2022-03-20 03:39:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2022-03-20 03:39:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:50,223 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:50,224 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:50,224 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 03:39:50,224 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1065255245, now seen corresponding path program 1 times [2022-03-20 03:39:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:50,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369682437] [2022-03-20 03:39:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:50,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:50,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369682437] [2022-03-20 03:39:50,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369682437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:50,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:50,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 03:39:50,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055046234] [2022-03-20 03:39:50,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:50,292 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 03:39:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:50,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 03:39:50,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-20 03:39:50,293 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 8 states have internal predecessors, (140), 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) [2022-03-20 03:39:51,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:51,706 INFO L93 Difference]: Finished difference Result 919 states and 1374 transitions. [2022-03-20 03:39:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 03:39:51,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 8 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:51,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:51,710 INFO L225 Difference]: With dead ends: 919 [2022-03-20 03:39:51,710 INFO L226 Difference]: Without dead ends: 919 [2022-03-20 03:39:51,710 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-03-20 03:39:51,711 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 1369 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 2354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2354 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:51,711 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 16 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2354 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 03:39:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-20 03:39:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 186. [2022-03-20 03:39:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.489010989010989) internal successors, (271), 182 states have internal predecessors, (271), 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) [2022-03-20 03:39:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 274 transitions. [2022-03-20 03:39:51,721 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 274 transitions. Word has length 143 [2022-03-20 03:39:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:51,721 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 274 transitions. [2022-03-20 03:39:51,721 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 8 states have internal predecessors, (140), 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) [2022-03-20 03:39:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 274 transitions. [2022-03-20 03:39:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:51,722 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:51,722 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:51,722 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 03:39:51,722 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1570813870, now seen corresponding path program 1 times [2022-03-20 03:39:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:51,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003650567] [2022-03-20 03:39:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:51,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003650567] [2022-03-20 03:39:51,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003650567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:51,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:51,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 03:39:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015821878] [2022-03-20 03:39:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:51,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 03:39:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 03:39:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-03-20 03:39:51,859 INFO L87 Difference]: Start difference. First operand 186 states and 274 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 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) [2022-03-20 03:39:53,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:53,757 INFO L93 Difference]: Finished difference Result 1041 states and 1557 transitions. [2022-03-20 03:39:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 03:39:53,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:53,761 INFO L225 Difference]: With dead ends: 1041 [2022-03-20 03:39:53,761 INFO L226 Difference]: Without dead ends: 1041 [2022-03-20 03:39:53,761 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-03-20 03:39:53,764 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 1426 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 3042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 4159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3042 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:53,765 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 26 Invalid, 4159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3042 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-20 03:39:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-03-20 03:39:53,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 200. [2022-03-20 03:39:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.489795918367347) internal successors, (292), 196 states have internal predecessors, (292), 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) [2022-03-20 03:39:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 295 transitions. [2022-03-20 03:39:53,772 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 295 transitions. Word has length 143 [2022-03-20 03:39:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:53,772 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 295 transitions. [2022-03-20 03:39:53,772 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 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) [2022-03-20 03:39:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 295 transitions. [2022-03-20 03:39:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:53,773 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:53,773 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:53,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 03:39:53,774 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2081348047, now seen corresponding path program 1 times [2022-03-20 03:39:53,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:53,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100824242] [2022-03-20 03:39:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:53,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:53,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:53,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100824242] [2022-03-20 03:39:53,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100824242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:53,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:53,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 03:39:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192946048] [2022-03-20 03:39:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:53,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 03:39:53,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:53,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 03:39:53,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-03-20 03:39:53,867 INFO L87 Difference]: Start difference. First operand 200 states and 295 transitions. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 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) [2022-03-20 03:39:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:55,654 INFO L93 Difference]: Finished difference Result 1161 states and 1737 transitions. [2022-03-20 03:39:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 03:39:55,654 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:55,681 INFO L225 Difference]: With dead ends: 1161 [2022-03-20 03:39:55,681 INFO L226 Difference]: Without dead ends: 1161 [2022-03-20 03:39:55,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-03-20 03:39:55,682 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 1609 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 3470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 4708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3470 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:55,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 26 Invalid, 4708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3470 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 03:39:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-03-20 03:39:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 216. [2022-03-20 03:39:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.490566037735849) internal successors, (316), 212 states have internal predecessors, (316), 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) [2022-03-20 03:39:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 319 transitions. [2022-03-20 03:39:55,690 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 319 transitions. Word has length 143 [2022-03-20 03:39:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:55,690 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 319 transitions. [2022-03-20 03:39:55,690 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 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) [2022-03-20 03:39:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 319 transitions. [2022-03-20 03:39:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:55,691 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:55,691 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:55,692 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 03:39:55,692 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1216546896, now seen corresponding path program 1 times [2022-03-20 03:39:55,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:55,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509775330] [2022-03-20 03:39:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:55,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509775330] [2022-03-20 03:39:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509775330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:55,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:55,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 03:39:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939615016] [2022-03-20 03:39:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:55,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 03:39:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 03:39:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-03-20 03:39:55,783 INFO L87 Difference]: Start difference. First operand 216 states and 319 transitions. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 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) [2022-03-20 03:39:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:39:57,674 INFO L93 Difference]: Finished difference Result 1279 states and 1914 transitions. [2022-03-20 03:39:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 03:39:57,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 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 143 [2022-03-20 03:39:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:39:57,677 INFO L225 Difference]: With dead ends: 1279 [2022-03-20 03:39:57,677 INFO L226 Difference]: Without dead ends: 1279 [2022-03-20 03:39:57,678 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-03-20 03:39:57,678 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 1843 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 2829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 4186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2829 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 03:39:57,678 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 26 Invalid, 4186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2829 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 03:39:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-03-20 03:39:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 234. [2022-03-20 03:39:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.491304347826087) internal successors, (343), 230 states have internal predecessors, (343), 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) [2022-03-20 03:39:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 346 transitions. [2022-03-20 03:39:57,684 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 346 transitions. Word has length 143 [2022-03-20 03:39:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:39:57,685 INFO L478 AbstractCegarLoop]: Abstraction has 234 states and 346 transitions. [2022-03-20 03:39:57,685 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 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) [2022-03-20 03:39:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 346 transitions. [2022-03-20 03:39:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:39:57,685 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:39:57,686 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:39:57,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 03:39:57,686 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:39:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:39:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 807722671, now seen corresponding path program 1 times [2022-03-20 03:39:57,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:39:57,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960692281] [2022-03-20 03:39:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:39:57,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:39:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:39:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:39:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:39:57,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:39:57,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960692281] [2022-03-20 03:39:57,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960692281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:39:57,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:39:57,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 03:39:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686351329] [2022-03-20 03:39:57,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:39:57,781 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 03:39:57,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:39:57,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 03:39:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-03-20 03:39:57,781 INFO L87 Difference]: Start difference. First operand 234 states and 346 transitions. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 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) [2022-03-20 03:40:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:00,188 INFO L93 Difference]: Finished difference Result 1395 states and 2088 transitions. [2022-03-20 03:40:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 03:40:00,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:00,192 INFO L225 Difference]: With dead ends: 1395 [2022-03-20 03:40:00,192 INFO L226 Difference]: Without dead ends: 1395 [2022-03-20 03:40:00,192 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-03-20 03:40:00,193 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 2275 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 3994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3994 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:00,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 26 Invalid, 5468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3994 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-20 03:40:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2022-03-20 03:40:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 254. [2022-03-20 03:40:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.492) internal successors, (373), 250 states have internal predecessors, (373), 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) [2022-03-20 03:40:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2022-03-20 03:40:00,201 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 143 [2022-03-20 03:40:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:00,201 INFO L478 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2022-03-20 03:40:00,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 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) [2022-03-20 03:40:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2022-03-20 03:40:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:00,202 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:00,202 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:00,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 03:40:00,203 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1230333618, now seen corresponding path program 1 times [2022-03-20 03:40:00,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:00,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757836766] [2022-03-20 03:40:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:00,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:00,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757836766] [2022-03-20 03:40:00,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757836766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:00,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:00,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 03:40:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700531427] [2022-03-20 03:40:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:00,318 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 03:40:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 03:40:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-03-20 03:40:00,319 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand has 14 states, 14 states have (on average 10.0) internal successors, (140), 13 states have internal predecessors, (140), 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) [2022-03-20 03:40:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:02,420 INFO L93 Difference]: Finished difference Result 1509 states and 2259 transitions. [2022-03-20 03:40:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 03:40:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.0) internal successors, (140), 13 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:02,423 INFO L225 Difference]: With dead ends: 1509 [2022-03-20 03:40:02,423 INFO L226 Difference]: Without dead ends: 1509 [2022-03-20 03:40:02,424 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-03-20 03:40:02,424 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 2184 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 3422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 5014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3422 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:02,424 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 31 Invalid, 5014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3422 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 03:40:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2022-03-20 03:40:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 276. [2022-03-20 03:40:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.4926470588235294) internal successors, (406), 272 states have internal predecessors, (406), 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) [2022-03-20 03:40:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 409 transitions. [2022-03-20 03:40:02,430 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 409 transitions. Word has length 143 [2022-03-20 03:40:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:02,430 INFO L478 AbstractCegarLoop]: Abstraction has 276 states and 409 transitions. [2022-03-20 03:40:02,431 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.0) internal successors, (140), 13 states have internal predecessors, (140), 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) [2022-03-20 03:40:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 409 transitions. [2022-03-20 03:40:02,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:02,431 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:02,432 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:02,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 03:40:02,432 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1297340371, now seen corresponding path program 1 times [2022-03-20 03:40:02,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38293014] [2022-03-20 03:40:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:02,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:02,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38293014] [2022-03-20 03:40:02,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38293014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:02,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:02,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 03:40:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807977318] [2022-03-20 03:40:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:02,547 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 03:40:02,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 03:40:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-03-20 03:40:02,548 INFO L87 Difference]: Start difference. First operand 276 states and 409 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 14 states have internal predecessors, (140), 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) [2022-03-20 03:40:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:05,478 INFO L93 Difference]: Finished difference Result 1621 states and 2427 transitions. [2022-03-20 03:40:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 03:40:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 14 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:05,482 INFO L225 Difference]: With dead ends: 1621 [2022-03-20 03:40:05,482 INFO L226 Difference]: Without dead ends: 1621 [2022-03-20 03:40:05,483 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-03-20 03:40:05,483 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 2699 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 6259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6259 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:05,483 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2699 Valid, 26 Invalid, 7961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6259 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 03:40:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2022-03-20 03:40:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 300. [2022-03-20 03:40:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 1.4932432432432432) internal successors, (442), 296 states have internal predecessors, (442), 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) [2022-03-20 03:40:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 445 transitions. [2022-03-20 03:40:05,490 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 445 transitions. Word has length 143 [2022-03-20 03:40:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:05,490 INFO L478 AbstractCegarLoop]: Abstraction has 300 states and 445 transitions. [2022-03-20 03:40:05,491 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 14 states have internal predecessors, (140), 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) [2022-03-20 03:40:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 445 transitions. [2022-03-20 03:40:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:05,491 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:05,492 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:05,492 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 03:40:05,492 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1266320564, now seen corresponding path program 1 times [2022-03-20 03:40:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:05,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541526883] [2022-03-20 03:40:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:05,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541526883] [2022-03-20 03:40:05,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541526883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:05,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:05,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 03:40:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145730239] [2022-03-20 03:40:05,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:05,598 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 03:40:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 03:40:05,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-03-20 03:40:05,599 INFO L87 Difference]: Start difference. First operand 300 states and 445 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 15 states have internal predecessors, (140), 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) [2022-03-20 03:40:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:07,915 INFO L93 Difference]: Finished difference Result 1731 states and 2592 transitions. [2022-03-20 03:40:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 03:40:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 15 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:07,919 INFO L225 Difference]: With dead ends: 1731 [2022-03-20 03:40:07,919 INFO L226 Difference]: Without dead ends: 1731 [2022-03-20 03:40:07,920 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-03-20 03:40:07,920 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 2599 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 4847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 6663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4847 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:07,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 31 Invalid, 6663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4847 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 03:40:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-03-20 03:40:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 326. [2022-03-20 03:40:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 322 states have (on average 1.4937888198757765) internal successors, (481), 322 states have internal predecessors, (481), 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) [2022-03-20 03:40:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2022-03-20 03:40:07,927 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 143 [2022-03-20 03:40:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:07,927 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2022-03-20 03:40:07,927 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 15 states have internal predecessors, (140), 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) [2022-03-20 03:40:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2022-03-20 03:40:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:07,928 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:07,928 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:07,928 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 03:40:07,928 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1521057109, now seen corresponding path program 1 times [2022-03-20 03:40:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:07,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726441519] [2022-03-20 03:40:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:08,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726441519] [2022-03-20 03:40:08,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726441519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:08,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:08,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-20 03:40:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475881731] [2022-03-20 03:40:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:08,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 03:40:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 03:40:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-03-20 03:40:08,074 INFO L87 Difference]: Start difference. First operand 326 states and 484 transitions. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 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) [2022-03-20 03:40:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:11,466 INFO L93 Difference]: Finished difference Result 1839 states and 2754 transitions. [2022-03-20 03:40:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 03:40:11,466 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:11,470 INFO L225 Difference]: With dead ends: 1839 [2022-03-20 03:40:11,470 INFO L226 Difference]: Without dead ends: 1839 [2022-03-20 03:40:11,471 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-03-20 03:40:11,471 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 2839 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 6940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 8868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6940 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:11,471 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 36 Invalid, 8868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6940 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-20 03:40:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-03-20 03:40:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 354. [2022-03-20 03:40:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 350 states have (on average 1.4942857142857142) internal successors, (523), 350 states have internal predecessors, (523), 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) [2022-03-20 03:40:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 526 transitions. [2022-03-20 03:40:11,478 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 526 transitions. Word has length 143 [2022-03-20 03:40:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:11,478 INFO L478 AbstractCegarLoop]: Abstraction has 354 states and 526 transitions. [2022-03-20 03:40:11,478 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 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) [2022-03-20 03:40:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 526 transitions. [2022-03-20 03:40:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:11,479 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:11,479 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:11,479 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 03:40:11,479 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:11,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1509740982, now seen corresponding path program 1 times [2022-03-20 03:40:11,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:11,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820318946] [2022-03-20 03:40:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:11,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820318946] [2022-03-20 03:40:11,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820318946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:11,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:11,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 03:40:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092142668] [2022-03-20 03:40:11,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:11,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 03:40:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 03:40:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-03-20 03:40:11,649 INFO L87 Difference]: Start difference. First operand 354 states and 526 transitions. Second operand has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 17 states have internal predecessors, (140), 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) [2022-03-20 03:40:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:15,074 INFO L93 Difference]: Finished difference Result 1945 states and 2913 transitions. [2022-03-20 03:40:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 03:40:15,075 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 17 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:15,079 INFO L225 Difference]: With dead ends: 1945 [2022-03-20 03:40:15,079 INFO L226 Difference]: Without dead ends: 1945 [2022-03-20 03:40:15,079 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-03-20 03:40:15,080 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 2802 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 5396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2802 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 7428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5396 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:15,080 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2802 Valid, 31 Invalid, 7428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5396 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-20 03:40:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2022-03-20 03:40:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 384. [2022-03-20 03:40:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.4947368421052631) internal successors, (568), 380 states have internal predecessors, (568), 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) [2022-03-20 03:40:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 571 transitions. [2022-03-20 03:40:15,087 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 571 transitions. Word has length 143 [2022-03-20 03:40:15,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:15,088 INFO L478 AbstractCegarLoop]: Abstraction has 384 states and 571 transitions. [2022-03-20 03:40:15,088 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 17 states have internal predecessors, (140), 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) [2022-03-20 03:40:15,088 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 571 transitions. [2022-03-20 03:40:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:15,088 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:15,089 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:15,089 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 03:40:15,089 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash 775122473, now seen corresponding path program 1 times [2022-03-20 03:40:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:15,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941118834] [2022-03-20 03:40:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:15,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941118834] [2022-03-20 03:40:15,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941118834] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:15,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:15,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-20 03:40:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670944698] [2022-03-20 03:40:15,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:15,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 03:40:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 03:40:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-03-20 03:40:15,247 INFO L87 Difference]: Start difference. First operand 384 states and 571 transitions. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 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) [2022-03-20 03:40:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:18,856 INFO L93 Difference]: Finished difference Result 2049 states and 3069 transitions. [2022-03-20 03:40:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 03:40:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:18,861 INFO L225 Difference]: With dead ends: 2049 [2022-03-20 03:40:18,861 INFO L226 Difference]: Without dead ends: 2049 [2022-03-20 03:40:18,861 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-03-20 03:40:18,862 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 3463 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 6229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 8363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6229 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:18,862 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3463 Valid, 26 Invalid, 8363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6229 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-03-20 03:40:18,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-03-20 03:40:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 416. [2022-03-20 03:40:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 412 states have (on average 1.4951456310679612) internal successors, (616), 412 states have internal predecessors, (616), 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) [2022-03-20 03:40:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 619 transitions. [2022-03-20 03:40:18,869 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 619 transitions. Word has length 143 [2022-03-20 03:40:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:18,869 INFO L478 AbstractCegarLoop]: Abstraction has 416 states and 619 transitions. [2022-03-20 03:40:18,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 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) [2022-03-20 03:40:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 619 transitions. [2022-03-20 03:40:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:18,870 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:18,870 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:18,870 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 03:40:18,870 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1800614472, now seen corresponding path program 1 times [2022-03-20 03:40:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:18,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011961484] [2022-03-20 03:40:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:19,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011961484] [2022-03-20 03:40:19,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011961484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:19,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:19,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-03-20 03:40:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982771399] [2022-03-20 03:40:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:19,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-20 03:40:19,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-20 03:40:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2022-03-20 03:40:19,687 INFO L87 Difference]: Start difference. First operand 416 states and 619 transitions. Second operand has 54 states, 54 states have (on average 2.5925925925925926) internal successors, (140), 53 states have internal predecessors, (140), 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) [2022-03-20 03:40:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:21,052 INFO L93 Difference]: Finished difference Result 241 states and 290 transitions. [2022-03-20 03:40:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-20 03:40:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.5925925925925926) internal successors, (140), 53 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:21,053 INFO L225 Difference]: With dead ends: 241 [2022-03-20 03:40:21,053 INFO L226 Difference]: Without dead ends: 241 [2022-03-20 03:40:21,056 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3984, Invalid=6936, Unknown=0, NotChecked=0, Total=10920 [2022-03-20 03:40:21,056 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 559 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:21,056 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 30 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 03:40:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-03-20 03:40:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-03-20 03:40:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.2109704641350212) internal successors, (287), 237 states have internal predecessors, (287), 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) [2022-03-20 03:40:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 290 transitions. [2022-03-20 03:40:21,076 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 290 transitions. Word has length 143 [2022-03-20 03:40:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:21,076 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 290 transitions. [2022-03-20 03:40:21,076 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.5925925925925926) internal successors, (140), 53 states have internal predecessors, (140), 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) [2022-03-20 03:40:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 290 transitions. [2022-03-20 03:40:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:40:21,077 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:21,077 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:21,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 03:40:21,077 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:21,077 INFO L85 PathProgramCache]: Analyzing trace with hash -544052569, now seen corresponding path program 1 times [2022-03-20 03:40:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:21,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365340229] [2022-03-20 03:40:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:22,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:22,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365340229] [2022-03-20 03:40:22,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365340229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:22,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:22,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-03-20 03:40:22,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232391986] [2022-03-20 03:40:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:22,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-20 03:40:22,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-20 03:40:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-03-20 03:40:22,201 INFO L87 Difference]: Start difference. First operand 241 states and 290 transitions. Second operand has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 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) [2022-03-20 03:40:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:24,173 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2022-03-20 03:40:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-20 03:40:24,173 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 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 143 [2022-03-20 03:40:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:24,174 INFO L225 Difference]: With dead ends: 147 [2022-03-20 03:40:24,174 INFO L226 Difference]: Without dead ends: 147 [2022-03-20 03:40:24,177 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-03-20 03:40:24,179 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 337 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:24,180 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 31 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 03:40:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-03-20 03:40:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2022-03-20 03:40:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 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) [2022-03-20 03:40:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2022-03-20 03:40:24,185 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2022-03-20 03:40:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:24,185 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2022-03-20 03:40:24,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 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) [2022-03-20 03:40:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2022-03-20 03:40:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-03-20 03:40:24,186 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:24,186 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:24,186 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 03:40:24,186 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1150564772, now seen corresponding path program 1 times [2022-03-20 03:40:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:24,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369531812] [2022-03-20 03:40:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:25,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369531812] [2022-03-20 03:40:25,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369531812] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:40:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145039020] [2022-03-20 03:40:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:40:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:40:25,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 03:40:25,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 03:40:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:25,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-20 03:40:25,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:40:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:25,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:40:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:26,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145039020] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:40:26,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:40:26,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 104 [2022-03-20 03:40:26,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456970523] [2022-03-20 03:40:26,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:40:26,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-03-20 03:40:26,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-03-20 03:40:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-03-20 03:40:26,829 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 104 states, 104 states have (on average 2.730769230769231) internal successors, (284), 103 states have internal predecessors, (284), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:40:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:30,772 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2022-03-20 03:40:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-20 03:40:30,773 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.730769230769231) internal successors, (284), 103 states have internal predecessors, (284), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2022-03-20 03:40:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:30,773 INFO L225 Difference]: With dead ends: 210 [2022-03-20 03:40:30,773 INFO L226 Difference]: Without dead ends: 210 [2022-03-20 03:40:30,777 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5780 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2022-03-20 03:40:30,777 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 526 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:30,777 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 26 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 03:40:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-20 03:40:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-03-20 03:40:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 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) [2022-03-20 03:40:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2022-03-20 03:40:30,781 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 145 [2022-03-20 03:40:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:30,782 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2022-03-20 03:40:30,782 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.730769230769231) internal successors, (284), 103 states have internal predecessors, (284), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:40:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2022-03-20 03:40:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-03-20 03:40:30,783 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:30,783 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:30,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 03:40:30,983 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:40:30,984 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 163308868, now seen corresponding path program 2 times [2022-03-20 03:40:30,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:30,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703084849] [2022-03-20 03:40:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:31,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:31,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703084849] [2022-03-20 03:40:31,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703084849] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:40:31,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127608410] [2022-03-20 03:40:31,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 03:40:31,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:40:31,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:40:31,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 03:40:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 03:40:32,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 03:40:32,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 03:40:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 105 conjunts are in the unsatisfiable core [2022-03-20 03:40:32,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:40:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:32,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:40:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:33,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127608410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:40:33,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:40:33,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 56 [2022-03-20 03:40:33,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871459323] [2022-03-20 03:40:33,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:40:33,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-20 03:40:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-20 03:40:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2022-03-20 03:40:33,617 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 55 states have internal predecessors, (209), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:40:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:38,042 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2022-03-20 03:40:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-20 03:40:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 55 states have internal predecessors, (209), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2022-03-20 03:40:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:38,043 INFO L225 Difference]: With dead ends: 214 [2022-03-20 03:40:38,043 INFO L226 Difference]: Without dead ends: 213 [2022-03-20 03:40:38,044 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 414 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=321, Invalid=11235, Unknown=0, NotChecked=0, Total=11556 [2022-03-20 03:40:38,045 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 160 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 10769 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 10821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 10769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:38,045 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 426 Invalid, 10821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 10769 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-20 03:40:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-03-20 03:40:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2022-03-20 03:40:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.0048076923076923) internal successors, (209), 208 states have internal predecessors, (209), 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) [2022-03-20 03:40:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2022-03-20 03:40:38,047 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2022-03-20 03:40:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:38,047 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2022-03-20 03:40:38,048 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 55 states have internal predecessors, (209), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:40:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2022-03-20 03:40:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-03-20 03:40:38,048 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:40:38,048 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:38,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 03:40:38,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-03-20 03:40:38,249 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:40:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:40:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1974894335, now seen corresponding path program 3 times [2022-03-20 03:40:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:40:38,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835466359] [2022-03-20 03:40:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:40:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:40:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:40:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:40:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:40:38,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:40:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835466359] [2022-03-20 03:40:38,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835466359] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:40:38,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:40:38,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-03-20 03:40:38,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213737418] [2022-03-20 03:40:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:40:38,945 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-20 03:40:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:40:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-20 03:40:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-03-20 03:40:38,946 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 53 states, 53 states have (on average 3.9245283018867925) internal successors, (208), 52 states have internal predecessors, (208), 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) [2022-03-20 03:40:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:40:39,924 INFO L93 Difference]: Finished difference Result 207 states and 206 transitions. [2022-03-20 03:40:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-20 03:40:39,924 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.9245283018867925) internal successors, (208), 52 states have internal predecessors, (208), 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 211 [2022-03-20 03:40:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:40:39,924 INFO L225 Difference]: With dead ends: 207 [2022-03-20 03:40:39,925 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:40:39,926 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-03-20 03:40:39,926 INFO L913 BasicCegarLoop]: 108 mSDtfsCounter, 179 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 03:40:39,927 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 125 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 03:40:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:40:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:40:39,927 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) [2022-03-20 03:40:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:40:39,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2022-03-20 03:40:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:40:39,927 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:40:39,927 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.9245283018867925) internal successors, (208), 52 states have internal predecessors, (208), 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) [2022-03-20 03:40:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:40:39,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:40:39,929 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:40:39,930 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 03:40:39,932 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:40:39,932 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:40:39,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:40:39 BasicIcfg [2022-03-20 03:40:39,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:40:39,939 INFO L158 Benchmark]: Toolchain (without parser) took 56272.37ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 109.5MB in the beginning and 172.2MB in the end (delta: -62.7MB). Peak memory consumption was 147.3MB. Max. memory is 8.0GB. [2022-03-20 03:40:39,939 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 167.8MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:40:39,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.93ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 109.4MB in the beginning and 182.9MB in the end (delta: -73.6MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2022-03-20 03:40:39,939 INFO L158 Benchmark]: Boogie Preprocessor took 50.46ms. Allocated memory is still 218.1MB. Free memory was 182.9MB in the beginning and 180.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:40:39,940 INFO L158 Benchmark]: RCFGBuilder took 545.69ms. Allocated memory is still 218.1MB. Free memory was 180.4MB in the beginning and 140.5MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-03-20 03:40:39,940 INFO L158 Benchmark]: IcfgTransformer took 30.40ms. Allocated memory is still 218.1MB. Free memory was 140.5MB in the beginning and 135.8MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-03-20 03:40:39,940 INFO L158 Benchmark]: TraceAbstraction took 55194.89ms. Allocated memory was 218.1MB in the beginning and 377.5MB in the end (delta: 159.4MB). Free memory was 135.3MB in the beginning and 172.2MB in the end (delta: -36.9MB). Peak memory consumption was 122.4MB. Max. memory is 8.0GB. [2022-03-20 03:40:39,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 167.8MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 446.93ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 109.4MB in the beginning and 182.9MB in the end (delta: -73.6MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.46ms. Allocated memory is still 218.1MB. Free memory was 182.9MB in the beginning and 180.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 545.69ms. Allocated memory is still 218.1MB. Free memory was 180.4MB in the beginning and 140.5MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * IcfgTransformer took 30.40ms. Allocated memory is still 218.1MB. Free memory was 140.5MB in the beginning and 135.8MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * TraceAbstraction took 55194.89ms. Allocated memory was 218.1MB in the beginning and 377.5MB in the end (delta: 159.4MB). Free memory was 135.3MB in the beginning and 172.2MB in the end (delta: -36.9MB). Peak memory consumption was 122.4MB. 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: 444]: 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, 149 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.1s, OverallIterations: 21, TraceHistogramMax: 34, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 44.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30593 SdHoareTripleChecker+Valid, 33.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30593 mSDsluCounter, 1040 SdHoareTripleChecker+Invalid, 27.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 599 mSDsCounter, 55746 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34166 IncrementalHoareTripleChecker+Invalid, 89912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55746 mSolverCounterUnsat, 441 mSDtfsCounter, 34166 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1809 GetRequests, 866 SyntacticMatches, 6 SemanticMatches, 937 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12897 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=16, InterpolantAutomatonStates: 520, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 15250 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 3493 NumberOfCodeBlocks, 3493 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 3822 ConstructedInterpolants, 0 QuantifiedInterpolants, 9705 SizeOfPredicates, 2 NumberOfNonLiveVariables, 938 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 1156/4426 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! [2022-03-20 03:40:39,967 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...