/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:35:18,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:35:18,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:35:18,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:35:18,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:35:18,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:35:18,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:35:18,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:35:18,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:35:18,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:35:18,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:35:18,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:35:18,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:35:18,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:35:18,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:35:18,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:35:18,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:35:18,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:35:18,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:35:18,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:35:18,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:35:18,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:35:18,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:35:18,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:35:18,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:35:18,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:35:18,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:35:18,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:35:18,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:35:18,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:35:18,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:35:18,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:35:18,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:35:18,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:35:18,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:35:18,708 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:35:18,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:35:18,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:35:18,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:35:18,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:35:18,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:35:18,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:35:18,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:35:18,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:35:18,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:35:18,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:35:18,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:35:18,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:35:18,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:35:18,714 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:35:18,714 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:35:18,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:35:18,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:35:18,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:35:18,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:35:18,967 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:35:18,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c [2022-01-10 19:35:19,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c129c2e2/13617d42f5944484b0b8d69f8d8ab046/FLAG2f77609dd [2022-01-10 19:35:19,816 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:35:19,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c [2022-01-10 19:35:19,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c129c2e2/13617d42f5944484b0b8d69f8d8ab046/FLAG2f77609dd [2022-01-10 19:35:20,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c129c2e2/13617d42f5944484b0b8d69f8d8ab046 [2022-01-10 19:35:20,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:35:20,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:35:20,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:35:20,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:35:20,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:35:20,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:35:20" (1/1) ... [2022-01-10 19:35:20,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff0cedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:20, skipping insertion in model container [2022-01-10 19:35:20,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:35:20" (1/1) ... [2022-01-10 19:35:20,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:35:20,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:35:21,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c[375709,375722] [2022-01-10 19:35:21,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c[383339,383352] [2022-01-10 19:35:22,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:35:22,125 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:35:22,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c[375709,375722] [2022-01-10 19:35:22,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.09.cil-1.c[383339,383352] [2022-01-10 19:35:22,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:35:22,989 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:35:22,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22 WrapperNode [2022-01-10 19:35:22,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:35:22,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:35:22,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:35:22,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:35:22,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,585 INFO L137 Inliner]: procedures = 63, calls = 68, calls flagged for inlining = 63, calls inlined = 192, statements flattened = 15092 [2022-01-10 19:35:23,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:35:23,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:35:23,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:35:23,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:35:23,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:23,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:24,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:35:24,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:35:24,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:35:24,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:35:24,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (1/1) ... [2022-01-10 19:35:24,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:35:24,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:35:24,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:35:24,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:35:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:35:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:35:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:35:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:35:24,263 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:35:24,265 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:35:33,088 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:35:33,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:35:33,132 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 19:35:33,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:33 BoogieIcfgContainer [2022-01-10 19:35:33,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:35:33,142 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:35:33,142 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:35:33,143 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:35:33,145 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:33" (1/1) ... [2022-01-10 19:35:34,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:35:34 BasicIcfg [2022-01-10 19:35:34,847 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:35:34,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:35:34,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:35:34,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:35:34,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:35:20" (1/4) ... [2022-01-10 19:35:34,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ce985a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:35:34, skipping insertion in model container [2022-01-10 19:35:34,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:22" (2/4) ... [2022-01-10 19:35:34,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ce985a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:35:34, skipping insertion in model container [2022-01-10 19:35:34,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:33" (3/4) ... [2022-01-10 19:35:34,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ce985a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:35:34, skipping insertion in model container [2022-01-10 19:35:34,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:35:34" (4/4) ... [2022-01-10 19:35:34,853 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.09.cil-1.cTransformedIcfg [2022-01-10 19:35:34,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:35:34,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:35:34,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:35:34,908 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:35:34,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:35:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 3360 states, 3357 states have (on average 1.7453083109919572) internal successors, (5859), 3359 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:34,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:34,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:34,973 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash 624402874, now seen corresponding path program 1 times [2022-01-10 19:35:34,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:34,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968466288] [2022-01-10 19:35:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:34,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:35,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:35,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968466288] [2022-01-10 19:35:35,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968466288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:35,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:35,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:35,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965059133] [2022-01-10 19:35:35,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:35,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:35,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:35,345 INFO L87 Difference]: Start difference. First operand has 3360 states, 3357 states have (on average 1.7453083109919572) internal successors, (5859), 3359 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:35,658 INFO L93 Difference]: Finished difference Result 7680 states and 13153 transitions. [2022-01-10 19:35:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:35,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:35,697 INFO L225 Difference]: With dead ends: 7680 [2022-01-10 19:35:35,698 INFO L226 Difference]: Without dead ends: 4266 [2022-01-10 19:35:35,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:35,714 INFO L933 BasicCegarLoop]: 5764 mSDtfsCounter, 5646 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5646 SdHoareTripleChecker+Valid, 7300 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:35,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5646 Valid, 7300 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2022-01-10 19:35:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4264. [2022-01-10 19:35:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6736274049741906) internal successors, (7133), 4263 states have internal predecessors, (7133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7133 transitions. [2022-01-10 19:35:35,918 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7133 transitions. Word has length 132 [2022-01-10 19:35:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:35,920 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7133 transitions. [2022-01-10 19:35:35,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7133 transitions. [2022-01-10 19:35:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:35,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:35,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:35,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:35:35,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 36078554, now seen corresponding path program 1 times [2022-01-10 19:35:35,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739567673] [2022-01-10 19:35:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:35,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:36,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:36,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739567673] [2022-01-10 19:35:36,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739567673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:36,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:36,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:36,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71625987] [2022-01-10 19:35:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:36,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:36,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:36,081 INFO L87 Difference]: Start difference. First operand 4264 states and 7133 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:36,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:36,200 INFO L93 Difference]: Finished difference Result 6390 states and 10280 transitions. [2022-01-10 19:35:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:36,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:36,219 INFO L225 Difference]: With dead ends: 6390 [2022-01-10 19:35:36,220 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:36,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:36,228 INFO L933 BasicCegarLoop]: 5691 mSDtfsCounter, 5679 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:36,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 5691 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:36,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6717503519474426) internal successors, (7125), 4263 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7125 transitions. [2022-01-10 19:35:36,348 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7125 transitions. Word has length 132 [2022-01-10 19:35:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:36,350 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7125 transitions. [2022-01-10 19:35:36,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7125 transitions. [2022-01-10 19:35:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:36,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:36,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:36,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:35:36,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash -121446982, now seen corresponding path program 1 times [2022-01-10 19:35:36,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:36,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003071383] [2022-01-10 19:35:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:36,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:36,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003071383] [2022-01-10 19:35:36,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003071383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:36,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:36,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:36,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687267320] [2022-01-10 19:35:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:36,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:36,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:36,465 INFO L87 Difference]: Start difference. First operand 4264 states and 7125 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:36,579 INFO L93 Difference]: Finished difference Result 6389 states and 10263 transitions. [2022-01-10 19:35:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:36,705 INFO L225 Difference]: With dead ends: 6389 [2022-01-10 19:35:36,706 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:36,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:36,712 INFO L933 BasicCegarLoop]: 5686 mSDtfsCounter, 5673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5673 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:36,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5673 Valid, 5686 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6698732989206946) internal successors, (7117), 4263 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7117 transitions. [2022-01-10 19:35:36,831 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7117 transitions. Word has length 132 [2022-01-10 19:35:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7117 transitions. [2022-01-10 19:35:36,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7117 transitions. [2022-01-10 19:35:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:36,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:36,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:36,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:35:36,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 843302874, now seen corresponding path program 1 times [2022-01-10 19:35:36,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:36,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141358362] [2022-01-10 19:35:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:36,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:36,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:36,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141358362] [2022-01-10 19:35:36,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141358362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:36,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:36,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:36,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712792627] [2022-01-10 19:35:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:36,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:36,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:36,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:36,915 INFO L87 Difference]: Start difference. First operand 4264 states and 7117 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:37,025 INFO L93 Difference]: Finished difference Result 6388 states and 10246 transitions. [2022-01-10 19:35:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:37,042 INFO L225 Difference]: With dead ends: 6388 [2022-01-10 19:35:37,042 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:37,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:37,053 INFO L933 BasicCegarLoop]: 5681 mSDtfsCounter, 5667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:37,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 5681 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6679962458939466) internal successors, (7109), 4263 states have internal predecessors, (7109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7109 transitions. [2022-01-10 19:35:37,196 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7109 transitions. Word has length 132 [2022-01-10 19:35:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:37,196 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7109 transitions. [2022-01-10 19:35:37,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7109 transitions. [2022-01-10 19:35:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:37,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:37,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:37,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:35:37,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1844255162, now seen corresponding path program 1 times [2022-01-10 19:35:37,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981122385] [2022-01-10 19:35:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:37,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:37,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:37,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981122385] [2022-01-10 19:35:37,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981122385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:37,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:37,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:37,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373868645] [2022-01-10 19:35:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:37,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:37,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:37,268 INFO L87 Difference]: Start difference. First operand 4264 states and 7109 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:37,388 INFO L93 Difference]: Finished difference Result 6387 states and 10229 transitions. [2022-01-10 19:35:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:37,404 INFO L225 Difference]: With dead ends: 6387 [2022-01-10 19:35:37,404 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:37,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:37,408 INFO L933 BasicCegarLoop]: 5676 mSDtfsCounter, 5661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:37,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 5676 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6661191928671986) internal successors, (7101), 4263 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7101 transitions. [2022-01-10 19:35:37,532 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7101 transitions. Word has length 132 [2022-01-10 19:35:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:37,536 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7101 transitions. [2022-01-10 19:35:37,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7101 transitions. [2022-01-10 19:35:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:37,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:37,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:37,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:35:37,543 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1864234022, now seen corresponding path program 1 times [2022-01-10 19:35:37,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:37,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272182535] [2022-01-10 19:35:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:37,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:37,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:37,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272182535] [2022-01-10 19:35:37,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272182535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:37,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:37,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:37,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733334573] [2022-01-10 19:35:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:37,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:37,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:37,605 INFO L87 Difference]: Start difference. First operand 4264 states and 7101 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:37,726 INFO L93 Difference]: Finished difference Result 6386 states and 10212 transitions. [2022-01-10 19:35:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:37,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:37,742 INFO L225 Difference]: With dead ends: 6386 [2022-01-10 19:35:37,742 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:37,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:37,748 INFO L933 BasicCegarLoop]: 5671 mSDtfsCounter, 5655 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5655 SdHoareTripleChecker+Valid, 5671 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:37,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5655 Valid, 5671 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6642421398404506) internal successors, (7093), 4263 states have internal predecessors, (7093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7093 transitions. [2022-01-10 19:35:37,873 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7093 transitions. Word has length 132 [2022-01-10 19:35:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:37,873 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7093 transitions. [2022-01-10 19:35:37,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7093 transitions. [2022-01-10 19:35:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:37,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:37,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:37,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:35:37,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1618367930, now seen corresponding path program 1 times [2022-01-10 19:35:37,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:37,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385245227] [2022-01-10 19:35:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:37,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:37,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:37,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385245227] [2022-01-10 19:35:37,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385245227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:37,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:37,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203854658] [2022-01-10 19:35:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:37,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:37,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:37,966 INFO L87 Difference]: Start difference. First operand 4264 states and 7093 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:38,113 INFO L93 Difference]: Finished difference Result 6385 states and 10195 transitions. [2022-01-10 19:35:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:38,125 INFO L225 Difference]: With dead ends: 6385 [2022-01-10 19:35:38,126 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:38,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:38,132 INFO L933 BasicCegarLoop]: 5666 mSDtfsCounter, 5649 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5649 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:38,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5649 Valid, 5666 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6623650868137025) internal successors, (7085), 4263 states have internal predecessors, (7085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7085 transitions. [2022-01-10 19:35:38,303 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7085 transitions. Word has length 132 [2022-01-10 19:35:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:38,304 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7085 transitions. [2022-01-10 19:35:38,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7085 transitions. [2022-01-10 19:35:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:38,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:38,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:38,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:35:38,307 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:38,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash -901689382, now seen corresponding path program 1 times [2022-01-10 19:35:38,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:38,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176318642] [2022-01-10 19:35:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:38,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:38,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176318642] [2022-01-10 19:35:38,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176318642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:38,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:38,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:38,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906970617] [2022-01-10 19:35:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:38,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:38,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:38,365 INFO L87 Difference]: Start difference. First operand 4264 states and 7085 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:38,513 INFO L93 Difference]: Finished difference Result 6384 states and 10178 transitions. [2022-01-10 19:35:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:38,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:38,524 INFO L225 Difference]: With dead ends: 6384 [2022-01-10 19:35:38,524 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:38,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:38,530 INFO L933 BasicCegarLoop]: 5661 mSDtfsCounter, 5643 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5643 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:38,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5643 Valid, 5661 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6604880337869545) internal successors, (7077), 4263 states have internal predecessors, (7077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7077 transitions. [2022-01-10 19:35:38,701 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7077 transitions. Word has length 132 [2022-01-10 19:35:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:38,702 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7077 transitions. [2022-01-10 19:35:38,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7077 transitions. [2022-01-10 19:35:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:38,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:38,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:38,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:35:38,705 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1675718214, now seen corresponding path program 1 times [2022-01-10 19:35:38,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270574247] [2022-01-10 19:35:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:38,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:38,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:38,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270574247] [2022-01-10 19:35:38,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270574247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:38,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:38,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:38,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972080363] [2022-01-10 19:35:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:38,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:38,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:38,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:38,761 INFO L87 Difference]: Start difference. First operand 4264 states and 7077 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:38,929 INFO L93 Difference]: Finished difference Result 6383 states and 10161 transitions. [2022-01-10 19:35:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:38,938 INFO L225 Difference]: With dead ends: 6383 [2022-01-10 19:35:38,939 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:38,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:38,945 INFO L933 BasicCegarLoop]: 5656 mSDtfsCounter, 5637 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5637 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:38,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5637 Valid, 5656 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6586109807602065) internal successors, (7069), 4263 states have internal predecessors, (7069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7069 transitions. [2022-01-10 19:35:39,127 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7069 transitions. Word has length 132 [2022-01-10 19:35:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:39,127 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7069 transitions. [2022-01-10 19:35:39,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7069 transitions. [2022-01-10 19:35:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:39,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:39,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:39,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:35:39,132 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1700686886, now seen corresponding path program 1 times [2022-01-10 19:35:39,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:39,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150937240] [2022-01-10 19:35:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:39,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:39,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:39,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150937240] [2022-01-10 19:35:39,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150937240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:39,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:39,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:39,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369925467] [2022-01-10 19:35:39,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:39,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:39,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:39,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:39,184 INFO L87 Difference]: Start difference. First operand 4264 states and 7069 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:39,375 INFO L93 Difference]: Finished difference Result 6382 states and 10144 transitions. [2022-01-10 19:35:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:39,384 INFO L225 Difference]: With dead ends: 6382 [2022-01-10 19:35:39,384 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:39,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:39,388 INFO L933 BasicCegarLoop]: 5651 mSDtfsCounter, 5631 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5631 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:39,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5631 Valid, 5651 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6567339277334585) internal successors, (7061), 4263 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7061 transitions. [2022-01-10 19:35:39,534 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7061 transitions. Word has length 132 [2022-01-10 19:35:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7061 transitions. [2022-01-10 19:35:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7061 transitions. [2022-01-10 19:35:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:39,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:39,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:39,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:35:39,537 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash -593113670, now seen corresponding path program 1 times [2022-01-10 19:35:39,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197351281] [2022-01-10 19:35:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:39,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:39,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:39,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197351281] [2022-01-10 19:35:39,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197351281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:39,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:39,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:39,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675049177] [2022-01-10 19:35:39,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:39,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:39,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:39,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:39,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:39,591 INFO L87 Difference]: Start difference. First operand 4264 states and 7061 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:39,750 INFO L93 Difference]: Finished difference Result 6381 states and 10127 transitions. [2022-01-10 19:35:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:39,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:39,760 INFO L225 Difference]: With dead ends: 6381 [2022-01-10 19:35:39,760 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:39,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:39,765 INFO L933 BasicCegarLoop]: 5622 mSDtfsCounter, 5511 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5511 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:39,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5511 Valid, 5720 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6496949788831534) internal successors, (7031), 4263 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7031 transitions. [2022-01-10 19:35:39,911 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7031 transitions. Word has length 132 [2022-01-10 19:35:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:39,911 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7031 transitions. [2022-01-10 19:35:39,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7031 transitions. [2022-01-10 19:35:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:39,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:39,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:39,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:35:39,913 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1777762471, now seen corresponding path program 1 times [2022-01-10 19:35:39,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:39,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705976088] [2022-01-10 19:35:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:39,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:39,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:39,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705976088] [2022-01-10 19:35:39,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705976088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:39,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:39,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:39,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809953925] [2022-01-10 19:35:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:39,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:39,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:39,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:39,974 INFO L87 Difference]: Start difference. First operand 4264 states and 7031 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:40,132 INFO L93 Difference]: Finished difference Result 6380 states and 10066 transitions. [2022-01-10 19:35:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:40,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:40,142 INFO L225 Difference]: With dead ends: 6380 [2022-01-10 19:35:40,143 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:40,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:40,147 INFO L933 BasicCegarLoop]: 5605 mSDtfsCounter, 5494 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5494 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:40,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5494 Valid, 5702 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6426560300328483) internal successors, (7001), 4263 states have internal predecessors, (7001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7001 transitions. [2022-01-10 19:35:40,295 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7001 transitions. Word has length 132 [2022-01-10 19:35:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:40,296 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7001 transitions. [2022-01-10 19:35:40,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7001 transitions. [2022-01-10 19:35:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:40,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:40,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:40,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:35:40,299 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1129358328, now seen corresponding path program 1 times [2022-01-10 19:35:40,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:40,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008455243] [2022-01-10 19:35:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:40,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:40,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:40,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008455243] [2022-01-10 19:35:40,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008455243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:40,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:40,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:40,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630683298] [2022-01-10 19:35:40,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:40,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:40,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:40,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:40,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:40,346 INFO L87 Difference]: Start difference. First operand 4264 states and 7001 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:40,573 INFO L93 Difference]: Finished difference Result 6378 states and 10003 transitions. [2022-01-10 19:35:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:40,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:40,581 INFO L225 Difference]: With dead ends: 6378 [2022-01-10 19:35:40,581 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:40,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:40,588 INFO L933 BasicCegarLoop]: 5588 mSDtfsCounter, 5476 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 5684 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:40,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5476 Valid, 5684 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6356170811825435) internal successors, (6971), 4263 states have internal predecessors, (6971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6971 transitions. [2022-01-10 19:35:40,745 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6971 transitions. Word has length 132 [2022-01-10 19:35:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:40,745 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6971 transitions. [2022-01-10 19:35:40,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6971 transitions. [2022-01-10 19:35:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:40,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:40,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:40,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:35:40,747 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1841715433, now seen corresponding path program 1 times [2022-01-10 19:35:40,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:40,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331608350] [2022-01-10 19:35:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:40,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:40,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:40,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331608350] [2022-01-10 19:35:40,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331608350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:40,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:40,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:40,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642780172] [2022-01-10 19:35:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:40,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:40,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:40,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:40,793 INFO L87 Difference]: Start difference. First operand 4264 states and 6971 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:40,955 INFO L93 Difference]: Finished difference Result 6377 states and 9942 transitions. [2022-01-10 19:35:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:40,964 INFO L225 Difference]: With dead ends: 6377 [2022-01-10 19:35:40,965 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:40,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:40,970 INFO L933 BasicCegarLoop]: 5571 mSDtfsCounter, 5459 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5459 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:40,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5459 Valid, 5666 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6285781323322384) internal successors, (6941), 4263 states have internal predecessors, (6941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6941 transitions. [2022-01-10 19:35:41,121 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6941 transitions. Word has length 132 [2022-01-10 19:35:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:41,121 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6941 transitions. [2022-01-10 19:35:41,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6941 transitions. [2022-01-10 19:35:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:41,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:41,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:41,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:35:41,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1138936394, now seen corresponding path program 1 times [2022-01-10 19:35:41,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:41,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031505459] [2022-01-10 19:35:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:41,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:41,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:41,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031505459] [2022-01-10 19:35:41,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031505459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:41,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:41,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:41,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842198200] [2022-01-10 19:35:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:41,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:41,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:41,176 INFO L87 Difference]: Start difference. First operand 4264 states and 6941 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:41,356 INFO L93 Difference]: Finished difference Result 6376 states and 9881 transitions. [2022-01-10 19:35:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:41,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:41,365 INFO L225 Difference]: With dead ends: 6376 [2022-01-10 19:35:41,365 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:41,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:41,373 INFO L933 BasicCegarLoop]: 5554 mSDtfsCounter, 5442 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5442 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:41,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5442 Valid, 5648 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6215391834819333) internal successors, (6911), 4263 states have internal predecessors, (6911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6911 transitions. [2022-01-10 19:35:41,539 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6911 transitions. Word has length 132 [2022-01-10 19:35:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:41,539 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6911 transitions. [2022-01-10 19:35:41,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6911 transitions. [2022-01-10 19:35:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:41,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:41,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:41,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:35:41,541 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1196152661, now seen corresponding path program 1 times [2022-01-10 19:35:41,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:41,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792471365] [2022-01-10 19:35:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:41,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:41,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:41,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792471365] [2022-01-10 19:35:41,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792471365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:41,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:41,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:41,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658644183] [2022-01-10 19:35:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:41,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:41,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:41,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:41,597 INFO L87 Difference]: Start difference. First operand 4264 states and 6911 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:41,800 INFO L93 Difference]: Finished difference Result 6374 states and 9818 transitions. [2022-01-10 19:35:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:41,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:41,810 INFO L225 Difference]: With dead ends: 6374 [2022-01-10 19:35:41,810 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:41,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:41,816 INFO L933 BasicCegarLoop]: 5537 mSDtfsCounter, 5424 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5424 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:41,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5424 Valid, 5630 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6145002346316284) internal successors, (6881), 4263 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6881 transitions. [2022-01-10 19:35:42,010 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6881 transitions. Word has length 132 [2022-01-10 19:35:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:42,010 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6881 transitions. [2022-01-10 19:35:42,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6881 transitions. [2022-01-10 19:35:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:42,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:42,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:42,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:35:42,013 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:42,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 327407476, now seen corresponding path program 1 times [2022-01-10 19:35:42,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:42,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089608231] [2022-01-10 19:35:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:42,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:42,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:42,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089608231] [2022-01-10 19:35:42,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089608231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:42,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:42,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:42,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645233228] [2022-01-10 19:35:42,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:42,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:42,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:42,066 INFO L87 Difference]: Start difference. First operand 4264 states and 6881 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:42,292 INFO L93 Difference]: Finished difference Result 6373 states and 9757 transitions. [2022-01-10 19:35:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:42,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:42,303 INFO L225 Difference]: With dead ends: 6373 [2022-01-10 19:35:42,303 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:42,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:42,310 INFO L933 BasicCegarLoop]: 5520 mSDtfsCounter, 5407 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5407 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:42,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5407 Valid, 5612 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6074612857813233) internal successors, (6851), 4263 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6851 transitions. [2022-01-10 19:35:42,529 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6851 transitions. Word has length 132 [2022-01-10 19:35:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:42,529 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6851 transitions. [2022-01-10 19:35:42,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6851 transitions. [2022-01-10 19:35:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:42,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:42,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:42,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:35:42,532 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash 331760403, now seen corresponding path program 1 times [2022-01-10 19:35:42,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:42,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379933712] [2022-01-10 19:35:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:42,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:42,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:42,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379933712] [2022-01-10 19:35:42,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379933712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:42,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:42,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:42,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574050015] [2022-01-10 19:35:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:42,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:42,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:42,585 INFO L87 Difference]: Start difference. First operand 4264 states and 6851 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:42,777 INFO L93 Difference]: Finished difference Result 6372 states and 9696 transitions. [2022-01-10 19:35:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:42,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:42,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:42,786 INFO L225 Difference]: With dead ends: 6372 [2022-01-10 19:35:42,786 INFO L226 Difference]: Without dead ends: 4264 [2022-01-10 19:35:42,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:42,791 INFO L933 BasicCegarLoop]: 5503 mSDtfsCounter, 5390 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:42,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5390 Valid, 5594 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:42,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-10 19:35:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-10 19:35:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6004223369310182) internal successors, (6821), 4263 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6821 transitions. [2022-01-10 19:35:42,954 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6821 transitions. Word has length 132 [2022-01-10 19:35:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:42,954 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6821 transitions. [2022-01-10 19:35:42,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6821 transitions. [2022-01-10 19:35:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:42,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:42,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:42,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:35:42,956 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1609261490, now seen corresponding path program 1 times [2022-01-10 19:35:42,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:42,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302321880] [2022-01-10 19:35:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:42,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:43,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:43,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302321880] [2022-01-10 19:35:43,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302321880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:43,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:43,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:35:43,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742367142] [2022-01-10 19:35:43,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:43,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:35:43,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:35:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:35:43,029 INFO L87 Difference]: Start difference. First operand 4264 states and 6821 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:43,472 INFO L93 Difference]: Finished difference Result 7226 states and 10823 transitions. [2022-01-10 19:35:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:35:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:43,485 INFO L225 Difference]: With dead ends: 7226 [2022-01-10 19:35:43,486 INFO L226 Difference]: Without dead ends: 5132 [2022-01-10 19:35:43,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:35:43,492 INFO L933 BasicCegarLoop]: 5626 mSDtfsCounter, 4294 mSDsluCounter, 13719 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 19345 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:43,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 19345 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:35:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-01-10 19:35:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 4270. [2022-01-10 19:35:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 4268 states have (on average 1.594423617619494) internal successors, (6805), 4269 states have internal predecessors, (6805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6805 transitions. [2022-01-10 19:35:43,691 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6805 transitions. Word has length 132 [2022-01-10 19:35:43,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:43,692 INFO L470 AbstractCegarLoop]: Abstraction has 4270 states and 6805 transitions. [2022-01-10 19:35:43,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:43,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6805 transitions. [2022-01-10 19:35:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:43,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:43,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:43,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:35:43,694 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:43,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash 400019251, now seen corresponding path program 1 times [2022-01-10 19:35:43,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:43,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807921619] [2022-01-10 19:35:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:43,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:43,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:43,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807921619] [2022-01-10 19:35:43,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807921619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:43,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:43,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:43,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979849754] [2022-01-10 19:35:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:43,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:43,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:43,742 INFO L87 Difference]: Start difference. First operand 4270 states and 6805 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:44,083 INFO L93 Difference]: Finished difference Result 8220 states and 12032 transitions. [2022-01-10 19:35:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:44,097 INFO L225 Difference]: With dead ends: 8220 [2022-01-10 19:35:44,097 INFO L226 Difference]: Without dead ends: 6122 [2022-01-10 19:35:44,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:44,103 INFO L933 BasicCegarLoop]: 5492 mSDtfsCounter, 5324 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5324 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:44,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5324 Valid, 6851 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2022-01-10 19:35:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6116. [2022-01-10 19:35:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 6114 states have (on average 1.5085050703303893) internal successors, (9223), 6115 states have internal predecessors, (9223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 9223 transitions. [2022-01-10 19:35:44,432 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 9223 transitions. Word has length 132 [2022-01-10 19:35:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:44,432 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 9223 transitions. [2022-01-10 19:35:44,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 9223 transitions. [2022-01-10 19:35:44,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:44,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:44,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:44,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:35:44,435 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:44,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:44,435 INFO L85 PathProgramCache]: Analyzing trace with hash 481721650, now seen corresponding path program 1 times [2022-01-10 19:35:44,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:44,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777556264] [2022-01-10 19:35:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:44,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:44,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777556264] [2022-01-10 19:35:44,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777556264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:44,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:44,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:44,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890377445] [2022-01-10 19:35:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:44,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:44,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:44,504 INFO L87 Difference]: Start difference. First operand 6116 states and 9223 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:45,080 INFO L93 Difference]: Finished difference Result 13567 states and 19029 transitions. [2022-01-10 19:35:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:45,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:45,101 INFO L225 Difference]: With dead ends: 13567 [2022-01-10 19:35:45,101 INFO L226 Difference]: Without dead ends: 9650 [2022-01-10 19:35:45,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:45,112 INFO L933 BasicCegarLoop]: 5489 mSDtfsCounter, 5297 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5297 SdHoareTripleChecker+Valid, 6848 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:45,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5297 Valid, 6848 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2022-01-10 19:35:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 9640. [2022-01-10 19:35:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9640 states, 9638 states have (on average 1.432973645984644) internal successors, (13811), 9639 states have internal predecessors, (13811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 13811 transitions. [2022-01-10 19:35:45,755 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 13811 transitions. Word has length 132 [2022-01-10 19:35:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:45,756 INFO L470 AbstractCegarLoop]: Abstraction has 9640 states and 13811 transitions. [2022-01-10 19:35:45,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 13811 transitions. [2022-01-10 19:35:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:45,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:45,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:45,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:35:45,759 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1195800625, now seen corresponding path program 1 times [2022-01-10 19:35:45,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:45,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322163561] [2022-01-10 19:35:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:45,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:45,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322163561] [2022-01-10 19:35:45,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322163561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:45,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:35:45,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389012875] [2022-01-10 19:35:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:45,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:35:45,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:35:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:35:45,814 INFO L87 Difference]: Start difference. First operand 9640 states and 13811 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:47,001 INFO L93 Difference]: Finished difference Result 22580 states and 30808 transitions. [2022-01-10 19:35:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:35:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:47,041 INFO L225 Difference]: With dead ends: 22580 [2022-01-10 19:35:47,042 INFO L226 Difference]: Without dead ends: 15143 [2022-01-10 19:35:47,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:35:47,062 INFO L933 BasicCegarLoop]: 5525 mSDtfsCounter, 3964 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3964 SdHoareTripleChecker+Valid, 22971 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:47,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3964 Valid, 22971 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:35:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15143 states. [2022-01-10 19:35:47,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15143 to 9772. [2022-01-10 19:35:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9772 states, 9770 states have (on average 1.4229273285568065) internal successors, (13902), 9771 states have internal predecessors, (13902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9772 states to 9772 states and 13902 transitions. [2022-01-10 19:35:47,835 INFO L78 Accepts]: Start accepts. Automaton has 9772 states and 13902 transitions. Word has length 132 [2022-01-10 19:35:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:47,835 INFO L470 AbstractCegarLoop]: Abstraction has 9772 states and 13902 transitions. [2022-01-10 19:35:47,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9772 states and 13902 transitions. [2022-01-10 19:35:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:47,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:47,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:47,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:35:47,838 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:47,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:47,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1889193330, now seen corresponding path program 1 times [2022-01-10 19:35:47,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:47,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821227822] [2022-01-10 19:35:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:47,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:47,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:47,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821227822] [2022-01-10 19:35:47,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821227822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:47,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:47,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:35:47,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237414337] [2022-01-10 19:35:47,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:47,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:35:47,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:35:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:35:47,923 INFO L87 Difference]: Start difference. First operand 9772 states and 13902 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:48,899 INFO L93 Difference]: Finished difference Result 20570 states and 28043 transitions. [2022-01-10 19:35:48,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:35:48,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:48,936 INFO L225 Difference]: With dead ends: 20570 [2022-01-10 19:35:48,936 INFO L226 Difference]: Without dead ends: 13008 [2022-01-10 19:35:48,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:35:48,955 INFO L933 BasicCegarLoop]: 5450 mSDtfsCounter, 3449 mSDsluCounter, 15462 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 20912 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:48,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3449 Valid, 20912 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:35:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13008 states. [2022-01-10 19:35:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13008 to 9784. [2022-01-10 19:35:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9784 states, 9782 states have (on average 1.414127990186056) internal successors, (13833), 9783 states have internal predecessors, (13833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9784 states to 9784 states and 13833 transitions. [2022-01-10 19:35:49,637 INFO L78 Accepts]: Start accepts. Automaton has 9784 states and 13833 transitions. Word has length 132 [2022-01-10 19:35:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:49,637 INFO L470 AbstractCegarLoop]: Abstraction has 9784 states and 13833 transitions. [2022-01-10 19:35:49,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9784 states and 13833 transitions. [2022-01-10 19:35:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 19:35:49,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:49,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:49,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:35:49,639 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1881433971, now seen corresponding path program 1 times [2022-01-10 19:35:49,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:49,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255734493] [2022-01-10 19:35:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:49,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:49,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:49,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255734493] [2022-01-10 19:35:49,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255734493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:49,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:49,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:49,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333459119] [2022-01-10 19:35:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:49,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:49,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:49,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:49,714 INFO L87 Difference]: Start difference. First operand 9784 states and 13833 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:50,868 INFO L93 Difference]: Finished difference Result 24837 states and 33245 transitions. [2022-01-10 19:35:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 19:35:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:50,915 INFO L225 Difference]: With dead ends: 24837 [2022-01-10 19:35:50,915 INFO L226 Difference]: Without dead ends: 17211 [2022-01-10 19:35:50,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:50,930 INFO L933 BasicCegarLoop]: 5473 mSDtfsCounter, 5326 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5326 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:50,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5326 Valid, 6821 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17211 states. [2022-01-10 19:35:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17211 to 16631. [2022-01-10 19:35:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16631 states, 16629 states have (on average 1.3590113656864513) internal successors, (22599), 16630 states have internal predecessors, (22599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16631 states to 16631 states and 22599 transitions. [2022-01-10 19:35:52,050 INFO L78 Accepts]: Start accepts. Automaton has 16631 states and 22599 transitions. Word has length 132 [2022-01-10 19:35:52,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:52,051 INFO L470 AbstractCegarLoop]: Abstraction has 16631 states and 22599 transitions. [2022-01-10 19:35:52,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:52,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16631 states and 22599 transitions. [2022-01-10 19:35:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 19:35:52,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:52,061 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:52,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:35:52,062 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -330604891, now seen corresponding path program 1 times [2022-01-10 19:35:52,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:52,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732536680] [2022-01-10 19:35:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:52,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:52,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:52,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732536680] [2022-01-10 19:35:52,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732536680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:52,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:52,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:52,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139664687] [2022-01-10 19:35:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:52,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:52,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:52,140 INFO L87 Difference]: Start difference. First operand 16631 states and 22599 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:53,820 INFO L93 Difference]: Finished difference Result 45147 states and 59279 transitions. [2022-01-10 19:35:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:53,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-01-10 19:35:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:53,895 INFO L225 Difference]: With dead ends: 45147 [2022-01-10 19:35:53,895 INFO L226 Difference]: Without dead ends: 30680 [2022-01-10 19:35:53,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:53,922 INFO L933 BasicCegarLoop]: 5470 mSDtfsCounter, 5350 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 6818 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:53,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 6818 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:35:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30680 states. [2022-01-10 19:35:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30680 to 29646. [2022-01-10 19:35:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29646 states, 29644 states have (on average 1.3246862771555796) internal successors, (39269), 29645 states have internal predecessors, (39269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29646 states to 29646 states and 39269 transitions. [2022-01-10 19:35:55,901 INFO L78 Accepts]: Start accepts. Automaton has 29646 states and 39269 transitions. Word has length 214 [2022-01-10 19:35:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:55,901 INFO L470 AbstractCegarLoop]: Abstraction has 29646 states and 39269 transitions. [2022-01-10 19:35:55,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 29646 states and 39269 transitions. [2022-01-10 19:35:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 19:35:55,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:55,921 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:55,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:35:55,922 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash 945037029, now seen corresponding path program 1 times [2022-01-10 19:35:55,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:55,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89439390] [2022-01-10 19:35:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:55,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:35:56,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89439390] [2022-01-10 19:35:56,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89439390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:56,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:56,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:56,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453186418] [2022-01-10 19:35:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:56,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:56,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:56,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:56,042 INFO L87 Difference]: Start difference. First operand 29646 states and 39269 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:59,296 INFO L93 Difference]: Finished difference Result 82503 states and 106549 transitions. [2022-01-10 19:35:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:59,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-01-10 19:35:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:59,432 INFO L225 Difference]: With dead ends: 82503 [2022-01-10 19:35:59,433 INFO L226 Difference]: Without dead ends: 55101 [2022-01-10 19:35:59,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:59,486 INFO L933 BasicCegarLoop]: 6354 mSDtfsCounter, 5143 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5143 SdHoareTripleChecker+Valid, 7861 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:59,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5143 Valid, 7861 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55101 states. [2022-01-10 19:36:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55101 to 55099. [2022-01-10 19:36:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55099 states, 55097 states have (on average 1.293337205292484) internal successors, (71259), 55098 states have internal predecessors, (71259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55099 states to 55099 states and 71259 transitions. [2022-01-10 19:36:03,251 INFO L78 Accepts]: Start accepts. Automaton has 55099 states and 71259 transitions. Word has length 214 [2022-01-10 19:36:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:03,251 INFO L470 AbstractCegarLoop]: Abstraction has 55099 states and 71259 transitions. [2022-01-10 19:36:03,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 55099 states and 71259 transitions. [2022-01-10 19:36:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 19:36:03,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:03,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:03,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:36:03,283 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:03,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1639279420, now seen corresponding path program 1 times [2022-01-10 19:36:03,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:03,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586958572] [2022-01-10 19:36:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:03,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:36:03,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586958572] [2022-01-10 19:36:03,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586958572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:03,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:03,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:03,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003676344] [2022-01-10 19:36:03,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:03,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:03,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:03,327 INFO L87 Difference]: Start difference. First operand 55099 states and 71259 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:36:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:06,836 INFO L93 Difference]: Finished difference Result 107837 states and 138268 transitions. [2022-01-10 19:36:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:06,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-01-10 19:36:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:07,110 INFO L225 Difference]: With dead ends: 107837 [2022-01-10 19:36:07,111 INFO L226 Difference]: Without dead ends: 54982 [2022-01-10 19:36:07,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:07,164 INFO L933 BasicCegarLoop]: 5483 mSDtfsCounter, 1521 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:36:07,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 9441 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54982 states.