/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 23:17:37,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 23:17:37,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 23:17:37,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 23:17:37,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 23:17:37,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 23:17:37,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 23:17:37,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 23:17:37,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 23:17:37,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 23:17:37,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 23:17:37,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 23:17:37,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 23:17:37,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 23:17:37,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 23:17:37,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 23:17:37,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 23:17:37,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 23:17:37,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 23:17:37,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 23:17:37,656 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 23:17:37,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 23:17:37,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 23:17:37,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 23:17:37,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 23:17:37,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 23:17:37,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 23:17:37,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 23:17:37,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 23:17:37,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 23:17:37,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 23:17:37,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 23:17:37,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 23:17:37,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 23:17:37,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 23:17:37,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 23:17:37,695 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 23:17:37,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 23:17:37,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 23:17:37,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 23:17:37,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 23:17:37,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:17:37,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 23:17:37,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 23:17:37,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 23:17:37,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 23:17:37,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 23:17:37,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 23:17:37,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 23:17:37,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 23:17:37,698 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 23:17:37,698 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 23:17:37,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 23:17:37,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 23:17:37,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 23:17:37,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 23:17:37,870 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 23:17:37,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c [2022-03-17 23:17:37,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af856e0c3/deff0801ac7a41f2927c5a6ac1da8af6/FLAG98464ca63 [2022-03-17 23:17:38,269 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 23:17:38,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c [2022-03-17 23:17:38,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af856e0c3/deff0801ac7a41f2927c5a6ac1da8af6/FLAG98464ca63 [2022-03-17 23:17:38,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af856e0c3/deff0801ac7a41f2927c5a6ac1da8af6 [2022-03-17 23:17:38,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 23:17:38,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 23:17:38,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 23:17:38,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 23:17:38,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 23:17:38,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:17:38" (1/1) ... [2022-03-17 23:17:38,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7628e917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:38, skipping insertion in model container [2022-03-17 23:17:38,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:17:38" (1/1) ... [2022-03-17 23:17:38,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 23:17:38,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 23:17:38,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c[43387,43400] [2022-03-17 23:17:39,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:17:39,010 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 23:17:39,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1.cil-2.c[43387,43400] [2022-03-17 23:17:39,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:17:39,081 INFO L208 MainTranslator]: Completed translation [2022-03-17 23:17:39,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39 WrapperNode [2022-03-17 23:17:39,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 23:17:39,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 23:17:39,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 23:17:39,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 23:17:39,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 23:17:39,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 23:17:39,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 23:17:39,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 23:17:39,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:17:39,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:17:39,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 23:17:39,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 23:17:39,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 23:17:39,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 23:17:39,262 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 23:17:39,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2022-03-17 23:17:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR [2022-03-17 23:17:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 23:17:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 23:17:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 23:17:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 23:17:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 23:17:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 23:17:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 23:17:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 23:17:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure ERR [2022-03-17 23:17:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2022-03-17 23:17:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 23:17:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 23:17:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 23:17:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 23:17:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 23:17:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 23:17:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 23:17:39,356 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 23:17:39,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 23:17:39,412 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 23:17:39,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-03-17 23:17:39,681 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-03-17 23:17:39,686 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 23:17:39,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 23:17:39,691 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 23:17:39,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:17:39 BoogieIcfgContainer [2022-03-17 23:17:39,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 23:17:39,693 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 23:17:39,694 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 23:17:39,694 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 23:17:39,696 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:17:39" (1/1) ... [2022-03-17 23:17:39,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:17:39 BasicIcfg [2022-03-17 23:17:39,719 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 23:17:39,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 23:17:39,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 23:17:39,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 23:17:39,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:17:38" (1/4) ... [2022-03-17 23:17:39,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@811836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:17:39, skipping insertion in model container [2022-03-17 23:17:39,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:17:39" (2/4) ... [2022-03-17 23:17:39,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@811836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:17:39, skipping insertion in model container [2022-03-17 23:17:39,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:17:39" (3/4) ... [2022-03-17 23:17:39,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@811836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:17:39, skipping insertion in model container [2022-03-17 23:17:39,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:17:39" (4/4) ... [2022-03-17 23:17:39,724 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-2.cqvasr [2022-03-17 23:17:39,728 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 23:17:39,728 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 23:17:39,757 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 23:17:39,761 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-17 23:17:39,762 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 23:17:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 145 states have (on average 1.696551724137931) internal successors, (246), 147 states have internal predecessors, (246), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-17 23:17:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:17:39,780 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:39,780 INFO L500 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] [2022-03-17 23:17:39,781 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 270340497, now seen corresponding path program 1 times [2022-03-17 23:17:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:39,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818420742] [2022-03-17 23:17:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:17:40,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:40,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818420742] [2022-03-17 23:17:40,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818420742] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:40,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:40,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150507344] [2022-03-17 23:17:40,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:40,021 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:40,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:40,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:40,048 INFO L87 Difference]: Start difference. First operand has 155 states, 145 states have (on average 1.696551724137931) internal successors, (246), 147 states have internal predecessors, (246), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:40,373 INFO L93 Difference]: Finished difference Result 424 states and 712 transitions. [2022-03-17 23:17:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-03-17 23:17:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:40,381 INFO L225 Difference]: With dead ends: 424 [2022-03-17 23:17:40,381 INFO L226 Difference]: Without dead ends: 256 [2022-03-17 23:17:40,384 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:40,386 INFO L912 BasicCegarLoop]: 242 mSDtfsCounter, 637 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:40,387 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 251 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-17 23:17:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2022-03-17 23:17:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.52) internal successors, (380), 250 states have internal predecessors, (380), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 385 transitions. [2022-03-17 23:17:40,429 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 385 transitions. Word has length 52 [2022-03-17 23:17:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:40,429 INFO L478 AbstractCegarLoop]: Abstraction has 256 states and 385 transitions. [2022-03-17 23:17:40,429 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 385 transitions. [2022-03-17 23:17:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 23:17:40,432 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:40,432 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 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] [2022-03-17 23:17:40,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 23:17:40,432 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:40,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1820054526, now seen corresponding path program 1 times [2022-03-17 23:17:40,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:40,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785377476] [2022-03-17 23:17:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:40,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:17:40,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785377476] [2022-03-17 23:17:40,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785377476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:40,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:40,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:40,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724424891] [2022-03-17 23:17:40,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:40,533 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:40,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:40,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:40,534 INFO L87 Difference]: Start difference. First operand 256 states and 385 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:40,728 INFO L93 Difference]: Finished difference Result 408 states and 622 transitions. [2022-03-17 23:17:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-03-17 23:17:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:40,730 INFO L225 Difference]: With dead ends: 408 [2022-03-17 23:17:40,730 INFO L226 Difference]: Without dead ends: 285 [2022-03-17 23:17:40,731 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:40,732 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:40,732 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 224 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-03-17 23:17:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 277. [2022-03-17 23:17:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 271 states have (on average 1.4981549815498154) internal successors, (406), 271 states have internal predecessors, (406), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 411 transitions. [2022-03-17 23:17:40,744 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 411 transitions. Word has length 68 [2022-03-17 23:17:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:40,744 INFO L478 AbstractCegarLoop]: Abstraction has 277 states and 411 transitions. [2022-03-17 23:17:40,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 411 transitions. [2022-03-17 23:17:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-17 23:17:40,747 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:40,747 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:40,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 23:17:40,748 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1118947656, now seen corresponding path program 1 times [2022-03-17 23:17:40,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:40,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314274518] [2022-03-17 23:17:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:40,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-17 23:17:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314274518] [2022-03-17 23:17:40,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314274518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:40,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:40,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860536769] [2022-03-17 23:17:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:40,812 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:40,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:40,812 INFO L87 Difference]: Start difference. First operand 277 states and 411 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:41,047 INFO L93 Difference]: Finished difference Result 632 states and 969 transitions. [2022-03-17 23:17:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:41,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-03-17 23:17:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:41,049 INFO L225 Difference]: With dead ends: 632 [2022-03-17 23:17:41,049 INFO L226 Difference]: Without dead ends: 369 [2022-03-17 23:17:41,051 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:41,051 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 219 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:41,052 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 225 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-17 23:17:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 361. [2022-03-17 23:17:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 355 states have (on average 1.408450704225352) internal successors, (500), 355 states have internal predecessors, (500), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 505 transitions. [2022-03-17 23:17:41,062 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 505 transitions. Word has length 89 [2022-03-17 23:17:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:41,062 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 505 transitions. [2022-03-17 23:17:41,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 505 transitions. [2022-03-17 23:17:41,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-17 23:17:41,065 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:41,065 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:41,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 23:17:41,065 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2143641577, now seen corresponding path program 1 times [2022-03-17 23:17:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:41,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197936093] [2022-03-17 23:17:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:41,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-17 23:17:41,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:41,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197936093] [2022-03-17 23:17:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197936093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:41,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:41,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530952344] [2022-03-17 23:17:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:41,115 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:41,115 INFO L87 Difference]: Start difference. First operand 361 states and 505 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:41,310 INFO L93 Difference]: Finished difference Result 762 states and 1086 transitions. [2022-03-17 23:17:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-03-17 23:17:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:41,312 INFO L225 Difference]: With dead ends: 762 [2022-03-17 23:17:41,312 INFO L226 Difference]: Without dead ends: 415 [2022-03-17 23:17:41,313 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:41,314 INFO L912 BasicCegarLoop]: 218 mSDtfsCounter, 217 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:41,314 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 225 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-03-17 23:17:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 407. [2022-03-17 23:17:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 401 states have (on average 1.3865336658354115) internal successors, (556), 401 states have internal predecessors, (556), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 561 transitions. [2022-03-17 23:17:41,324 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 561 transitions. Word has length 89 [2022-03-17 23:17:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:41,324 INFO L478 AbstractCegarLoop]: Abstraction has 407 states and 561 transitions. [2022-03-17 23:17:41,324 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 561 transitions. [2022-03-17 23:17:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-17 23:17:41,326 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:41,326 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:41,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 23:17:41,326 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:41,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1568616926, now seen corresponding path program 1 times [2022-03-17 23:17:41,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:41,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837827994] [2022-03-17 23:17:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-17 23:17:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:41,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837827994] [2022-03-17 23:17:41,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837827994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:41,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:41,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361095538] [2022-03-17 23:17:41,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:41,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:41,391 INFO L87 Difference]: Start difference. First operand 407 states and 561 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:41,583 INFO L93 Difference]: Finished difference Result 876 states and 1238 transitions. [2022-03-17 23:17:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2022-03-17 23:17:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:41,585 INFO L225 Difference]: With dead ends: 876 [2022-03-17 23:17:41,585 INFO L226 Difference]: Without dead ends: 483 [2022-03-17 23:17:41,586 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:41,587 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 249 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:41,587 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 224 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-03-17 23:17:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 457. [2022-03-17 23:17:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 451 states have (on average 1.3658536585365855) internal successors, (616), 451 states have internal predecessors, (616), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 621 transitions. [2022-03-17 23:17:41,596 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 621 transitions. Word has length 110 [2022-03-17 23:17:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:41,596 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 621 transitions. [2022-03-17 23:17:41,597 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 621 transitions. [2022-03-17 23:17:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-17 23:17:41,598 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:41,598 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:17:41,598 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 23:17:41,598 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 710803079, now seen corresponding path program 1 times [2022-03-17 23:17:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:41,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815550731] [2022-03-17 23:17:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-17 23:17:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:41,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815550731] [2022-03-17 23:17:41,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815550731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:41,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:41,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567903635] [2022-03-17 23:17:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:41,643 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:41,644 INFO L87 Difference]: Start difference. First operand 457 states and 621 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:41,817 INFO L93 Difference]: Finished difference Result 918 states and 1252 transitions. [2022-03-17 23:17:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-03-17 23:17:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:41,820 INFO L225 Difference]: With dead ends: 918 [2022-03-17 23:17:41,820 INFO L226 Difference]: Without dead ends: 684 [2022-03-17 23:17:41,821 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:41,822 INFO L912 BasicCegarLoop]: 374 mSDtfsCounter, 334 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:41,822 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 381 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-03-17 23:17:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2022-03-17 23:17:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 678 states have (on average 1.359882005899705) internal successors, (922), 678 states have internal predecessors, (922), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 927 transitions. [2022-03-17 23:17:41,835 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 927 transitions. Word has length 129 [2022-03-17 23:17:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:41,836 INFO L478 AbstractCegarLoop]: Abstraction has 684 states and 927 transitions. [2022-03-17 23:17:41,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 927 transitions. [2022-03-17 23:17:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-17 23:17:41,837 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:41,837 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:17:41,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 23:17:41,838 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:41,838 INFO L85 PathProgramCache]: Analyzing trace with hash -989937400, now seen corresponding path program 1 times [2022-03-17 23:17:41,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:41,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642244796] [2022-03-17 23:17:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:41,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-17 23:17:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642244796] [2022-03-17 23:17:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642244796] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:41,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:41,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976799261] [2022-03-17 23:17:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:41,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:41,890 INFO L87 Difference]: Start difference. First operand 684 states and 927 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:42,076 INFO L93 Difference]: Finished difference Result 1374 states and 1867 transitions. [2022-03-17 23:17:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-03-17 23:17:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:42,080 INFO L225 Difference]: With dead ends: 1374 [2022-03-17 23:17:42,080 INFO L226 Difference]: Without dead ends: 913 [2022-03-17 23:17:42,081 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:42,083 INFO L912 BasicCegarLoop]: 377 mSDtfsCounter, 336 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:42,083 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 384 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-03-17 23:17:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2022-03-17 23:17:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 907 states have (on average 1.3572216097023153) internal successors, (1231), 907 states have internal predecessors, (1231), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1236 transitions. [2022-03-17 23:17:42,102 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1236 transitions. Word has length 129 [2022-03-17 23:17:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:42,102 INFO L478 AbstractCegarLoop]: Abstraction has 913 states and 1236 transitions. [2022-03-17 23:17:42,102 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,102 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1236 transitions. [2022-03-17 23:17:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-03-17 23:17:42,105 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:42,106 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:17:42,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 23:17:42,106 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash 178258855, now seen corresponding path program 1 times [2022-03-17 23:17:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794617555] [2022-03-17 23:17:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-03-17 23:17:42,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:42,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794617555] [2022-03-17 23:17:42,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794617555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:42,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:42,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316388542] [2022-03-17 23:17:42,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:42,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:42,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:42,147 INFO L87 Difference]: Start difference. First operand 913 states and 1236 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:42,318 INFO L93 Difference]: Finished difference Result 1627 states and 2200 transitions. [2022-03-17 23:17:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-03-17 23:17:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:42,321 INFO L225 Difference]: With dead ends: 1627 [2022-03-17 23:17:42,321 INFO L226 Difference]: Without dead ends: 937 [2022-03-17 23:17:42,322 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:42,323 INFO L912 BasicCegarLoop]: 232 mSDtfsCounter, 210 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:42,323 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 239 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:17:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-03-17 23:17:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2022-03-17 23:17:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.3533834586466165) internal successors, (1260), 931 states have internal predecessors, (1260), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1265 transitions. [2022-03-17 23:17:42,339 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1265 transitions. Word has length 129 [2022-03-17 23:17:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:42,339 INFO L478 AbstractCegarLoop]: Abstraction has 937 states and 1265 transitions. [2022-03-17 23:17:42,339 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1265 transitions. [2022-03-17 23:17:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-03-17 23:17:42,341 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:42,341 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:42,342 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 23:17:42,342 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash 123134098, now seen corresponding path program 1 times [2022-03-17 23:17:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231801991] [2022-03-17 23:17:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-03-17 23:17:42,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:42,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231801991] [2022-03-17 23:17:42,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231801991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:42,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:42,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:42,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132012431] [2022-03-17 23:17:42,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:42,379 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:42,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:42,380 INFO L87 Difference]: Start difference. First operand 937 states and 1265 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:42,605 INFO L93 Difference]: Finished difference Result 2029 states and 2807 transitions. [2022-03-17 23:17:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2022-03-17 23:17:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:42,609 INFO L225 Difference]: With dead ends: 2029 [2022-03-17 23:17:42,609 INFO L226 Difference]: Without dead ends: 1106 [2022-03-17 23:17:42,610 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:42,611 INFO L912 BasicCegarLoop]: 215 mSDtfsCounter, 242 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:42,611 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 222 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-03-17 23:17:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1060. [2022-03-17 23:17:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1054 states have (on average 1.3349146110056926) internal successors, (1407), 1054 states have internal predecessors, (1407), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1412 transitions. [2022-03-17 23:17:42,629 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1412 transitions. Word has length 167 [2022-03-17 23:17:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:42,629 INFO L478 AbstractCegarLoop]: Abstraction has 1060 states and 1412 transitions. [2022-03-17 23:17:42,629 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1412 transitions. [2022-03-17 23:17:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-17 23:17:42,631 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:42,631 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:42,632 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 23:17:42,632 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash -256620717, now seen corresponding path program 1 times [2022-03-17 23:17:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:42,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891556090] [2022-03-17 23:17:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-03-17 23:17:42,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:42,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891556090] [2022-03-17 23:17:42,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891556090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:42,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:42,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620807878] [2022-03-17 23:17:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:42,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:42,667 INFO L87 Difference]: Start difference. First operand 1060 states and 1412 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:42,848 INFO L93 Difference]: Finished difference Result 2335 states and 3201 transitions. [2022-03-17 23:17:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2022-03-17 23:17:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:42,853 INFO L225 Difference]: With dead ends: 2335 [2022-03-17 23:17:42,853 INFO L226 Difference]: Without dead ends: 1285 [2022-03-17 23:17:42,855 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:42,855 INFO L912 BasicCegarLoop]: 216 mSDtfsCounter, 338 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:42,855 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 223 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-03-17 23:17:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1264. [2022-03-17 23:17:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1258 states have (on average 1.3879173290937996) internal successors, (1746), 1258 states have internal predecessors, (1746), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1751 transitions. [2022-03-17 23:17:42,879 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1751 transitions. Word has length 181 [2022-03-17 23:17:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:42,880 INFO L478 AbstractCegarLoop]: Abstraction has 1264 states and 1751 transitions. [2022-03-17 23:17:42,880 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1751 transitions. [2022-03-17 23:17:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-03-17 23:17:42,882 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:42,882 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-03-17 23:17:42,882 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 23:17:42,883 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -863922344, now seen corresponding path program 1 times [2022-03-17 23:17:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:42,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174705908] [2022-03-17 23:17:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-03-17 23:17:42,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:42,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174705908] [2022-03-17 23:17:42,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174705908] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:42,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:42,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014256640] [2022-03-17 23:17:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:42,929 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:42,930 INFO L87 Difference]: Start difference. First operand 1264 states and 1751 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:43,131 INFO L93 Difference]: Finished difference Result 2638 states and 3704 transitions. [2022-03-17 23:17:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:43,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2022-03-17 23:17:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:43,136 INFO L225 Difference]: With dead ends: 2638 [2022-03-17 23:17:43,136 INFO L226 Difference]: Without dead ends: 1388 [2022-03-17 23:17:43,138 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:43,138 INFO L912 BasicCegarLoop]: 205 mSDtfsCounter, 224 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:43,138 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 212 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-03-17 23:17:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1388. [2022-03-17 23:17:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1382 states have (on average 1.3675832127351664) internal successors, (1890), 1382 states have internal predecessors, (1890), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1895 transitions. [2022-03-17 23:17:43,166 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1895 transitions. Word has length 210 [2022-03-17 23:17:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:43,167 INFO L478 AbstractCegarLoop]: Abstraction has 1388 states and 1895 transitions. [2022-03-17 23:17:43,167 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1895 transitions. [2022-03-17 23:17:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-03-17 23:17:43,170 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:43,170 INFO L500 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-03-17 23:17:43,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 23:17:43,171 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1363637268, now seen corresponding path program 1 times [2022-03-17 23:17:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:43,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215142136] [2022-03-17 23:17:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-03-17 23:17:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215142136] [2022-03-17 23:17:43,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215142136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:43,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:43,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:43,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920474021] [2022-03-17 23:17:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:43,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:43,222 INFO L87 Difference]: Start difference. First operand 1388 states and 1895 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:43,440 INFO L93 Difference]: Finished difference Result 2930 states and 4076 transitions. [2022-03-17 23:17:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:43,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2022-03-17 23:17:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:43,445 INFO L225 Difference]: With dead ends: 2930 [2022-03-17 23:17:43,445 INFO L226 Difference]: Without dead ends: 1381 [2022-03-17 23:17:43,447 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:43,448 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 209 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:43,448 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 224 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-03-17 23:17:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2022-03-17 23:17:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1375 states have (on average 1.3614545454545455) internal successors, (1872), 1375 states have internal predecessors, (1872), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1877 transitions. [2022-03-17 23:17:43,488 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1877 transitions. Word has length 239 [2022-03-17 23:17:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:43,488 INFO L478 AbstractCegarLoop]: Abstraction has 1381 states and 1877 transitions. [2022-03-17 23:17:43,488 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1877 transitions. [2022-03-17 23:17:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-03-17 23:17:43,491 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:43,492 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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] [2022-03-17 23:17:43,492 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 23:17:43,492 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash 667275459, now seen corresponding path program 1 times [2022-03-17 23:17:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:43,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687848794] [2022-03-17 23:17:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-03-17 23:17:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:43,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687848794] [2022-03-17 23:17:43,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687848794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:43,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:43,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304015551] [2022-03-17 23:17:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:43,562 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:43,563 INFO L87 Difference]: Start difference. First operand 1381 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:43,756 INFO L93 Difference]: Finished difference Result 3970 states and 5426 transitions. [2022-03-17 23:17:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2022-03-17 23:17:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:43,761 INFO L225 Difference]: With dead ends: 3970 [2022-03-17 23:17:43,761 INFO L226 Difference]: Without dead ends: 1661 [2022-03-17 23:17:43,764 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:43,765 INFO L912 BasicCegarLoop]: 377 mSDtfsCounter, 320 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:43,766 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 384 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:17:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-03-17 23:17:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1660. [2022-03-17 23:17:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1654 states have (on average 1.3627569528415961) internal successors, (2254), 1654 states have internal predecessors, (2254), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2259 transitions. [2022-03-17 23:17:43,796 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2259 transitions. Word has length 279 [2022-03-17 23:17:43,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:43,797 INFO L478 AbstractCegarLoop]: Abstraction has 1660 states and 2259 transitions. [2022-03-17 23:17:43,797 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2259 transitions. [2022-03-17 23:17:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-03-17 23:17:43,801 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:43,801 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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] [2022-03-17 23:17:43,802 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 23:17:43,802 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1950874894, now seen corresponding path program 1 times [2022-03-17 23:17:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:43,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816019079] [2022-03-17 23:17:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:43,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-03-17 23:17:43,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:43,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816019079] [2022-03-17 23:17:43,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816019079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:43,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:43,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072796947] [2022-03-17 23:17:43,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:43,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:43,850 INFO L87 Difference]: Start difference. First operand 1660 states and 2259 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:44,048 INFO L93 Difference]: Finished difference Result 3481 states and 4795 transitions. [2022-03-17 23:17:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 326 [2022-03-17 23:17:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:44,053 INFO L225 Difference]: With dead ends: 3481 [2022-03-17 23:17:44,054 INFO L226 Difference]: Without dead ends: 1835 [2022-03-17 23:17:44,056 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:44,056 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 227 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:44,057 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 221 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-03-17 23:17:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1795. [2022-03-17 23:17:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1789 states have (on average 1.349357182783678) internal successors, (2414), 1789 states have internal predecessors, (2414), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2419 transitions. [2022-03-17 23:17:44,087 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2419 transitions. Word has length 326 [2022-03-17 23:17:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:44,088 INFO L478 AbstractCegarLoop]: Abstraction has 1795 states and 2419 transitions. [2022-03-17 23:17:44,088 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2419 transitions. [2022-03-17 23:17:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-03-17 23:17:44,091 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:44,091 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 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] [2022-03-17 23:17:44,091 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 23:17:44,091 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash -199601085, now seen corresponding path program 1 times [2022-03-17 23:17:44,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:44,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036323150] [2022-03-17 23:17:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-03-17 23:17:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036323150] [2022-03-17 23:17:44,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036323150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:44,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:44,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136525289] [2022-03-17 23:17:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:44,135 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:44,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:44,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:44,136 INFO L87 Difference]: Start difference. First operand 1795 states and 2419 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:44,349 INFO L93 Difference]: Finished difference Result 3731 states and 5080 transitions. [2022-03-17 23:17:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:44,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 349 [2022-03-17 23:17:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:44,354 INFO L225 Difference]: With dead ends: 3731 [2022-03-17 23:17:44,355 INFO L226 Difference]: Without dead ends: 1950 [2022-03-17 23:17:44,357 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:44,358 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 208 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:44,358 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 221 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-03-17 23:17:44,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1940. [2022-03-17 23:17:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1934 states have (on average 1.3360910031023785) internal successors, (2584), 1934 states have internal predecessors, (2584), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2589 transitions. [2022-03-17 23:17:44,396 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2589 transitions. Word has length 349 [2022-03-17 23:17:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:44,397 INFO L478 AbstractCegarLoop]: Abstraction has 1940 states and 2589 transitions. [2022-03-17 23:17:44,397 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2589 transitions. [2022-03-17 23:17:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-03-17 23:17:44,401 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:44,401 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 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] [2022-03-17 23:17:44,401 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 23:17:44,402 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2033863307, now seen corresponding path program 1 times [2022-03-17 23:17:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:44,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393512705] [2022-03-17 23:17:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 906 proven. 26 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-03-17 23:17:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:44,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393512705] [2022-03-17 23:17:44,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393512705] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:17:44,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756901589] [2022-03-17 23:17:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:44,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:17:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:17:44,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:17:44,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 23:17:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:44,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-17 23:17:44,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:17:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2022-03-17 23:17:45,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 23:17:45,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756901589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:45,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:17:45,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-03-17 23:17:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161465080] [2022-03-17 23:17:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:45,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 23:17:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:45,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 23:17:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:17:45,032 INFO L87 Difference]: Start difference. First operand 1940 states and 2589 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:45,075 INFO L93 Difference]: Finished difference Result 2729 states and 3640 transitions. [2022-03-17 23:17:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 23:17:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 383 [2022-03-17 23:17:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:45,081 INFO L225 Difference]: With dead ends: 2729 [2022-03-17 23:17:45,081 INFO L226 Difference]: Without dead ends: 2726 [2022-03-17 23:17:45,082 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:17:45,082 INFO L912 BasicCegarLoop]: 194 mSDtfsCounter, 139 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:45,082 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 374 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 23:17:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-03-17 23:17:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2726. [2022-03-17 23:17:45,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2720 states have (on average 1.3349264705882353) internal successors, (3631), 2720 states have internal predecessors, (3631), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3636 transitions. [2022-03-17 23:17:45,126 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3636 transitions. Word has length 383 [2022-03-17 23:17:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:45,127 INFO L478 AbstractCegarLoop]: Abstraction has 2726 states and 3636 transitions. [2022-03-17 23:17:45,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3636 transitions. [2022-03-17 23:17:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-03-17 23:17:45,133 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:45,133 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:45,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-17 23:17:45,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-17 23:17:45,347 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1809069780, now seen corresponding path program 1 times [2022-03-17 23:17:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:45,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580689194] [2022-03-17 23:17:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1196 proven. 26 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-03-17 23:17:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:45,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580689194] [2022-03-17 23:17:45,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580689194] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:17:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415190167] [2022-03-17 23:17:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:45,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:17:45,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:17:45,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:17:45,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 23:17:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:45,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-17 23:17:45,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:17:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 867 proven. 0 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2022-03-17 23:17:46,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 23:17:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415190167] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:17:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-03-17 23:17:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676695497] [2022-03-17 23:17:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:46,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 23:17:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 23:17:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:17:46,312 INFO L87 Difference]: Start difference. First operand 2726 states and 3636 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:46,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:46,353 INFO L93 Difference]: Finished difference Result 3074 states and 4104 transitions. [2022-03-17 23:17:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 23:17:46,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 454 [2022-03-17 23:17:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:46,365 INFO L225 Difference]: With dead ends: 3074 [2022-03-17 23:17:46,365 INFO L226 Difference]: Without dead ends: 2313 [2022-03-17 23:17:46,366 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:17:46,367 INFO L912 BasicCegarLoop]: 371 mSDtfsCounter, 100 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:46,367 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 560 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 23:17:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2022-03-17 23:17:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1968. [2022-03-17 23:17:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1962 states have (on average 1.3363914373088686) internal successors, (2622), 1962 states have internal predecessors, (2622), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2627 transitions. [2022-03-17 23:17:46,400 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2627 transitions. Word has length 454 [2022-03-17 23:17:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:46,400 INFO L478 AbstractCegarLoop]: Abstraction has 1968 states and 2627 transitions. [2022-03-17 23:17:46,401 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2627 transitions. [2022-03-17 23:17:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-03-17 23:17:46,406 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:46,406 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-03-17 23:17:46,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 23:17:46,622 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-17 23:17:46,622 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash 853548501, now seen corresponding path program 1 times [2022-03-17 23:17:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:46,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778903420] [2022-03-17 23:17:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:46,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1196 proven. 26 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-03-17 23:17:46,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:46,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778903420] [2022-03-17 23:17:46,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778903420] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:17:46,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261192792] [2022-03-17 23:17:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:46,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:17:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:17:46,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:17:46,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 23:17:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:46,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-17 23:17:46,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:17:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1196 proven. 26 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-03-17 23:17:47,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:17:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 1196 proven. 26 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-03-17 23:17:47,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261192792] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 23:17:47,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 23:17:47,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-03-17 23:17:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582385955] [2022-03-17 23:17:47,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 23:17:47,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:17:47,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:17:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 23:17:47,824 INFO L87 Difference]: Start difference. First operand 1968 states and 2627 transitions. Second operand has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 6 states have internal predecessors, (250), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:48,405 INFO L93 Difference]: Finished difference Result 4656 states and 6319 transitions. [2022-03-17 23:17:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 23:17:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 6 states have internal predecessors, (250), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 454 [2022-03-17 23:17:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:48,413 INFO L225 Difference]: With dead ends: 4656 [2022-03-17 23:17:48,413 INFO L226 Difference]: Without dead ends: 2569 [2022-03-17 23:17:48,416 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 913 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:17:48,416 INFO L912 BasicCegarLoop]: 304 mSDtfsCounter, 529 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:48,416 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 326 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:17:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-03-17 23:17:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1987. [2022-03-17 23:17:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1981 states have (on average 1.331145885916204) internal successors, (2637), 1981 states have internal predecessors, (2637), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2642 transitions. [2022-03-17 23:17:48,451 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2642 transitions. Word has length 454 [2022-03-17 23:17:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:48,451 INFO L478 AbstractCegarLoop]: Abstraction has 1987 states and 2642 transitions. [2022-03-17 23:17:48,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 6 states have internal predecessors, (250), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2642 transitions. [2022-03-17 23:17:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-03-17 23:17:48,457 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:48,457 INFO L500 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 17, 17, 16, 16, 15, 15, 15, 15, 12, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:48,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-17 23:17:48,670 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-17 23:17:48,670 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -402012141, now seen corresponding path program 1 times [2022-03-17 23:17:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:48,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084804982] [2022-03-17 23:17:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:48,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4562 backedges. 2170 proven. 0 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2022-03-17 23:17:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:48,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084804982] [2022-03-17 23:17:48,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084804982] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:48,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:48,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358534435] [2022-03-17 23:17:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:48,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:48,741 INFO L87 Difference]: Start difference. First operand 1987 states and 2642 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:48,939 INFO L93 Difference]: Finished difference Result 4176 states and 5638 transitions. [2022-03-17 23:17:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 663 [2022-03-17 23:17:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:48,945 INFO L225 Difference]: With dead ends: 4176 [2022-03-17 23:17:48,945 INFO L226 Difference]: Without dead ends: 2203 [2022-03-17 23:17:48,948 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:48,948 INFO L912 BasicCegarLoop]: 212 mSDtfsCounter, 206 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:48,948 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 219 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-03-17 23:17:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2191. [2022-03-17 23:17:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2185 states have (on average 1.31395881006865) internal successors, (2871), 2185 states have internal predecessors, (2871), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2876 transitions. [2022-03-17 23:17:49,009 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2876 transitions. Word has length 663 [2022-03-17 23:17:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:49,009 INFO L478 AbstractCegarLoop]: Abstraction has 2191 states and 2876 transitions. [2022-03-17 23:17:49,009 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2876 transitions. [2022-03-17 23:17:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2022-03-17 23:17:49,015 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:49,015 INFO L500 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 21, 21, 20, 20, 19, 19, 18, 18, 18, 18, 15, 12, 12, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:49,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 23:17:49,016 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1249705316, now seen corresponding path program 1 times [2022-03-17 23:17:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:49,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861874783] [2022-03-17 23:17:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6176 backedges. 2953 proven. 0 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2022-03-17 23:17:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861874783] [2022-03-17 23:17:49,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861874783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:17:49,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:17:49,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:17:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222750260] [2022-03-17 23:17:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:17:49,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:17:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:17:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:17:49,093 INFO L87 Difference]: Start difference. First operand 2191 states and 2876 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:49,287 INFO L93 Difference]: Finished difference Result 4596 states and 6130 transitions. [2022-03-17 23:17:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:17:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 756 [2022-03-17 23:17:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:49,293 INFO L225 Difference]: With dead ends: 4596 [2022-03-17 23:17:49,293 INFO L226 Difference]: Without dead ends: 2419 [2022-03-17 23:17:49,296 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:17:49,296 INFO L912 BasicCegarLoop]: 212 mSDtfsCounter, 206 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:49,297 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 219 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 23:17:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-03-17 23:17:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2407. [2022-03-17 23:17:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2401 states have (on average 1.2982090795501875) internal successors, (3117), 2401 states have internal predecessors, (3117), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 3122 transitions. [2022-03-17 23:17:49,333 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 3122 transitions. Word has length 756 [2022-03-17 23:17:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:49,333 INFO L478 AbstractCegarLoop]: Abstraction has 2407 states and 3122 transitions. [2022-03-17 23:17:49,333 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 3122 transitions. [2022-03-17 23:17:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2022-03-17 23:17:49,340 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:17:49,340 INFO L500 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21, 21, 18, 15, 15, 12, 12, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-17 23:17:49,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-17 23:17:49,340 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ERRErr0ASSERT_VIOLATIONERROR_FUNCTION === [ERRErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:17:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:17:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -783438281, now seen corresponding path program 1 times [2022-03-17 23:17:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:17:49,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276866829] [2022-03-17 23:17:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:17:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:49,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:17:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8111 backedges. 4746 proven. 26 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2022-03-17 23:17:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:17:49,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276866829] [2022-03-17 23:17:49,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276866829] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:17:49,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458090948] [2022-03-17 23:17:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:17:49,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:17:49,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:17:49,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:17:49,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 23:17:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:17:49,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-17 23:17:49,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:17:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8111 backedges. 4746 proven. 26 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2022-03-17 23:17:50,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:17:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8111 backedges. 4746 proven. 26 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2022-03-17 23:17:51,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458090948] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 23:17:51,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 23:17:51,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-03-17 23:17:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982348276] [2022-03-17 23:17:51,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 23:17:51,286 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:17:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:17:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:17:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-17 23:17:51,286 INFO L87 Difference]: Start difference. First operand 2407 states and 3122 transitions. Second operand has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 8 states have internal predecessors, (352), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:17:51,886 INFO L93 Difference]: Finished difference Result 4210 states and 5517 transitions. [2022-03-17 23:17:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 23:17:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 8 states have internal predecessors, (352), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 855 [2022-03-17 23:17:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:17:51,888 INFO L225 Difference]: With dead ends: 4210 [2022-03-17 23:17:51,888 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 23:17:51,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1723 GetRequests, 1712 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:17:51,892 INFO L912 BasicCegarLoop]: 300 mSDtfsCounter, 411 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 23:17:51,892 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 317 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 23:17:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 23:17:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 23:17:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 23:17:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 23:17:51,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 855 [2022-03-17 23:17:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:17:51,893 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 23:17:51,898 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.111111111111114) internal successors, (352), 8 states have internal predecessors, (352), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:17:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 23:17:51,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 23:17:51,900 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ERRErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 23:17:51,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-17 23:17:52,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:17:52,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-17 23:17:54,832 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-17 23:17:54,832 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-17 23:17:54,832 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-17 23:17:54,833 INFO L885 garLoopResultBuilder]: At program point ERRENTRY(lines 629 632) the Hoare annotation is: true [2022-03-17 23:17:54,833 INFO L882 garLoopResultBuilder]: For program point ERRErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2022-03-17 23:17:54,833 INFO L882 garLoopResultBuilder]: For program point ERRFINAL(lines 629 632) no Hoare annotation was computed. [2022-03-17 23:17:54,833 INFO L882 garLoopResultBuilder]: For program point ERREXIT(lines 629 632) no Hoare annotation was computed. [2022-03-17 23:17:54,833 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-17 23:17:54,833 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-17 23:17:54,833 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 633 644) the Hoare annotation is: true [2022-03-17 23:17:54,834 INFO L885 garLoopResultBuilder]: At program point L640(line 640) the Hoare annotation is: true [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L640-1(line 640) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 633 644) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 633 644) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L885 garLoopResultBuilder]: At program point ssl3_acceptENTRY(lines 23 627) the Hoare annotation is: true [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point L101-1(lines 84 626) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L882 garLoopResultBuilder]: For program point ssl3_acceptFINAL(lines 23 627) no Hoare annotation was computed. [2022-03-17 23:17:54,834 INFO L878 garLoopResultBuilder]: At program point L110-2(lines 110 614) the Hoare annotation is: (let ((.cse3 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (.cse2 (= 3 ssl3_accept_~blastFlag~0)) (.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse0 (= 2 ssl3_accept_~blastFlag~0))) (or (= ssl3_accept_~blastFlag~0 0) (and .cse0 (= ssl3_accept_~s__state~0 8512)) (and (= ssl3_accept_~blastFlag~0 1) (= 8496 ssl3_accept_~s__state~0)) (and .cse0 (= ssl3_accept_~s__state~0 8528)) (and .cse0 (= 8560 ssl3_accept_~s__state~0)) (and .cse1 .cse2) (and .cse3 (<= ssl3_accept_~s__state~0 8672) (<= 8672 ssl3_accept_~s__state~0) .cse2) (and .cse0 .cse3 (< ssl3_accept_~s__state~0 8656)) (and (= ssl3_accept_~s__state~0 8656) .cse0 .cse3) (and (= 8448 ssl3_accept_~s__state~0) (= 3 ssl3_accept_~s__s3__tmp__next_state___0~0) .cse2) (= ssl3_accept_~s__state~0 3) (and .cse0 .cse1) (and (= ssl3_accept_~s__state~0 8544) .cse0))) [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point ssl3_acceptEXIT(lines 23 627) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L885 garLoopResultBuilder]: At program point L615(lines 109 616) the Hoare annotation is: true [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L620(lines 620 622) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L113(lines 113 595) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L620-2(lines 620 622) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L878 garLoopResultBuilder]: At program point L114(lines 113 595) the Hoare annotation is: (let ((.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse0 (<= 8672 ssl3_accept_~s__state~0))) (or (and (= ssl3_accept_~blastFlag~0 0) .cse0) (and (= 2 ssl3_accept_~blastFlag~0) .cse1 .cse0) (and .cse1 .cse0 (= 3 ssl3_accept_~blastFlag~0)))) [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L116(lines 116 594) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L878 garLoopResultBuilder]: At program point L222(lines 116 594) the Hoare annotation is: (let ((.cse0 (= 2 ssl3_accept_~blastFlag~0)) (.cse1 (not (= ssl3_accept_~s__hit~0 0)))) (or (= ssl3_accept_~blastFlag~0 0) (and (< ssl3_accept_~s__state~0 8576) .cse0 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (and .cse1 (= 3 ssl3_accept_~blastFlag~0)) (and .cse0 .cse1))) [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L119(lines 119 593) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L122(lines 122 592) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L125(lines 125 591) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L128(lines 128 590) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L882 garLoopResultBuilder]: For program point L237(lines 237 244) no Hoare annotation was computed. [2022-03-17 23:17:54,835 INFO L878 garLoopResultBuilder]: At program point L132(lines 128 590) the Hoare annotation is: (let ((.cse1 (= 2 ssl3_accept_~blastFlag~0)) (.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (<= 8576 ssl3_accept_~s__state~0))) (and (< ssl3_accept_~s__state~0 8576) .cse1 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3))) [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L131(lines 131 589) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L237-2(lines 237 244) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L134(lines 134 588) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L246(lines 246 249) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L878 garLoopResultBuilder]: At program point L559(lines 110 614) the Hoare annotation is: (let ((.cse3 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (.cse2 (= 3 ssl3_accept_~blastFlag~0)) (.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse0 (= 2 ssl3_accept_~blastFlag~0))) (or (= ssl3_accept_~blastFlag~0 0) (and .cse0 (= ssl3_accept_~s__state~0 8512)) (and (= ssl3_accept_~blastFlag~0 1) (= 8496 ssl3_accept_~s__state~0)) (and .cse0 (= ssl3_accept_~s__state~0 8528)) (and .cse0 (= 8560 ssl3_accept_~s__state~0)) (and .cse1 .cse2) (and .cse3 (<= ssl3_accept_~s__state~0 8672) (<= 8672 ssl3_accept_~s__state~0) .cse2) (and .cse0 .cse3 (< ssl3_accept_~s__state~0 8656)) (and (= ssl3_accept_~s__state~0 8656) .cse0 .cse3) (and (= 8448 ssl3_accept_~s__state~0) (= 3 ssl3_accept_~s__s3__tmp__next_state___0~0) .cse2) (= ssl3_accept_~s__state~0 3) (and .cse0 .cse1) (and (= ssl3_accept_~s__state~0 8544) .cse0))) [2022-03-17 23:17:54,836 INFO L878 garLoopResultBuilder]: At program point L135(lines 134 588) the Hoare annotation is: (<= ssl3_accept_~s__state~0 8672) [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L137(lines 137 587) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L251(lines 251 262) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L597(lines 597 611) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L596(lines 596 612) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L878 garLoopResultBuilder]: At program point L144(lines 137 587) the Hoare annotation is: (let ((.cse1 (= 2 ssl3_accept_~blastFlag~0)) (.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (<= 8576 ssl3_accept_~s__state~0))) (and (< ssl3_accept_~s__state~0 8576) .cse1 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3))) [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L140(lines 140 586) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L253(lines 253 256) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L598(lines 598 603) no Hoare annotation was computed. [2022-03-17 23:17:54,836 INFO L882 garLoopResultBuilder]: For program point L283(lines 283 285) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L143(lines 143 585) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L600(lines 600 602) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L598-2(lines 597 611) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L283-2(lines 219 558) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L146(lines 146 584) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L605(lines 605 609) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L878 garLoopResultBuilder]: At program point L150(lines 146 584) the Hoare annotation is: (let ((.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse2 (= 2 ssl3_accept_~blastFlag~0)) (.cse5 (= ssl3_accept_~blastFlag~0 1)) (.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse3 (not (= ssl3_accept_~s__hit~0 0))) (.cse4 (<= ssl3_accept_~s__state~0 8672))) (or (and .cse0 .cse1) (and (< ssl3_accept_~s__state~0 8576) .cse2 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (and .cse3 .cse4 (= 3 ssl3_accept_~blastFlag~0)) (and .cse5 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 .cse3 .cse4) (and .cse0 .cse3 .cse4))) [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L149(lines 149 583) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L296(lines 296 298) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L152(lines 152 582) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L296-2(lines 219 558) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L878 garLoopResultBuilder]: At program point L156(lines 152 582) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L155(lines 155 581) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L302(lines 302 306) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L313(lines 313 320) no Hoare annotation was computed. [2022-03-17 23:17:54,837 INFO L882 garLoopResultBuilder]: For program point L158(lines 158 580) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L302-2(lines 302 306) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L313-2(lines 313 320) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L317(lines 317 319) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L878 garLoopResultBuilder]: At program point L162(lines 158 580) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L161(lines 161 579) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L164(lines 164 578) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L330-2(lines 219 558) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L878 garLoopResultBuilder]: At program point L168(lines 164 578) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L167(lines 167 577) no Hoare annotation was computed. [2022-03-17 23:17:54,838 INFO L878 garLoopResultBuilder]: At program point L361(lines 336 379) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,838 INFO L882 garLoopResultBuilder]: For program point L339(lines 339 378) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L386(lines 386 418) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L170(lines 170 576) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L363(lines 363 365) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L342(lines 342 377) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L387(lines 387 393) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L878 garLoopResultBuilder]: At program point L395(lines 386 418) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,839 INFO L878 garLoopResultBuilder]: At program point L174(lines 170 576) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L173(lines 173 575) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L342-1(lines 342 377) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L343(lines 343 374) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L398(lines 398 416) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L428(lines 428 430) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L176(lines 176 574) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L348(lines 348 372) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L882 garLoopResultBuilder]: For program point L399(lines 399 405) no Hoare annotation was computed. [2022-03-17 23:17:54,839 INFO L878 garLoopResultBuilder]: At program point L407(lines 398 416) the Hoare annotation is: (let ((.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse3 (<= ssl3_accept_~s__state~0 8672)) (.cse1 (not (<= 8576 ssl3_accept_~s__state~0))) (.cse4 (= 2 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 (= 3 ssl3_accept_~blastFlag~0)) (and .cse4 .cse2 .cse3) (and .cse0 .cse2 .cse3) (and .cse1 .cse4))) [2022-03-17 23:17:54,839 INFO L878 garLoopResultBuilder]: At program point L177(lines 176 574) the Hoare annotation is: (let ((.cse1 (= 2 ssl3_accept_~blastFlag~0)) (.cse2 (not (= ssl3_accept_~s__hit~0 0))) (.cse0 (= 8448 ssl3_accept_~s__state~0)) (.cse3 (= 3 ssl3_accept_~blastFlag~0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse1 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576)) (and .cse0 .cse2 .cse3) (and (= ssl3_accept_~blastFlag~0 0) .cse0) (and .cse0 (= 3 ssl3_accept_~s__s3__tmp__next_state___0~0) .cse3))) [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L179(lines 179 573) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L352(lines 352 356) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L410(lines 410 412) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L437(lines 437 445) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L878 garLoopResultBuilder]: At program point L183(lines 179 573) the Hoare annotation is: (let ((.cse3 (= 2 ssl3_accept_~blastFlag~0)) (.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse2 (<= ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (<= 8656 ssl3_accept_~s__state~0))) (and .cse1 .cse2 (= 3 ssl3_accept_~blastFlag~0)) (and .cse3 .cse1 .cse2) (and .cse3 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (< ssl3_accept_~s__state~0 8656)) (and .cse0 .cse1 .cse2))) [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L182(lines 182 572) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L352-2(lines 352 356) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L440(lines 440 443) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L437-2(lines 437 445) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L451(lines 451 453) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L185(lines 185 571) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L360(lines 360 368) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L454(lines 454 463) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L878 garLoopResultBuilder]: At program point L189(lines 185 571) the Hoare annotation is: (let ((.cse3 (= 2 ssl3_accept_~blastFlag~0)) (.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse2 (<= ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (<= 8656 ssl3_accept_~s__state~0))) (and .cse1 .cse2 (= 3 ssl3_accept_~blastFlag~0)) (and .cse3 .cse1 .cse2) (and .cse3 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (< ssl3_accept_~s__state~0 8656)) (and .cse0 .cse1 .cse2))) [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L188(lines 188 570) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L882 garLoopResultBuilder]: For program point L191(lines 191 569) no Hoare annotation was computed. [2022-03-17 23:17:54,840 INFO L878 garLoopResultBuilder]: At program point L195(lines 191 569) the Hoare annotation is: (let ((.cse3 (= 2 ssl3_accept_~blastFlag~0)) (.cse0 (= ssl3_accept_~blastFlag~0 0)) (.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse2 (<= ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (<= 8656 ssl3_accept_~s__state~0))) (and .cse1 .cse2 (= 3 ssl3_accept_~blastFlag~0)) (and .cse3 .cse1 .cse2) (and .cse3 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (< ssl3_accept_~s__state~0 8656)) (and .cse0 .cse1 .cse2))) [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L194(lines 194 568) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L477(lines 477 479) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L197(lines 197 567) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L878 garLoopResultBuilder]: At program point L201(lines 197 567) the Hoare annotation is: (or (and (not (= ssl3_accept_~s__hit~0 0)) (<= ssl3_accept_~s__state~0 8672)) (and (= ssl3_accept_~blastFlag~0 0) (not (<= 8656 ssl3_accept_~s__state~0))) (and (= 2 ssl3_accept_~blastFlag~0) (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (< ssl3_accept_~s__state~0 8656))) [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L200(lines 200 566) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L486(lines 486 488) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L203(lines 203 565) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L486-2(lines 219 558) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L878 garLoopResultBuilder]: At program point L207(lines 203 565) the Hoare annotation is: (let ((.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse2 (= 2 ssl3_accept_~blastFlag~0)) (.cse0 (<= ssl3_accept_~s__state~0 8672))) (or (and (= ssl3_accept_~blastFlag~0 0) .cse0) (and .cse1 .cse0 (= 3 ssl3_accept_~blastFlag~0)) (and .cse2 .cse1 .cse0) (and .cse2 (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576) .cse0))) [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L206(lines 206 564) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L492(lines 492 496) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L503(lines 503 506) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L209(lines 209 563) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L492-2(lines 492 496) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L508(lines 508 510) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L878 garLoopResultBuilder]: At program point L213(lines 209 563) the Hoare annotation is: (let ((.cse1 (not (= ssl3_accept_~s__hit~0 0))) (.cse0 (<= 8672 ssl3_accept_~s__state~0)) (.cse2 (= 3 ssl3_accept_~blastFlag~0))) (or (and (= ssl3_accept_~blastFlag~0 0) .cse0) (and (= 2 ssl3_accept_~blastFlag~0) .cse1 .cse0) (and (<= ssl3_accept_~s__s3__tmp__next_state___0~0 8576) .cse0 .cse2) (and .cse1 .cse0 .cse2))) [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L212(lines 212 562) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L508-2(lines 219 558) no Hoare annotation was computed. [2022-03-17 23:17:54,841 INFO L882 garLoopResultBuilder]: For program point L525(lines 525 531) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L215(lines 215 561) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L517(lines 517 520) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L528-1(lines 219 558) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L528(lines 528 530) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L885 garLoopResultBuilder]: At program point L216(lines 215 561) the Hoare annotation is: true [2022-03-17 23:17:54,842 INFO L885 garLoopResultBuilder]: At program point L218(lines 217 561) the Hoare annotation is: true [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L536(lines 536 540) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L878 garLoopResultBuilder]: At program point L529(line 529) the Hoare annotation is: false [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L546(lines 546 552) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L536-2(lines 536 540) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L549(lines 549 551) no Hoare annotation was computed. [2022-03-17 23:17:54,842 INFO L882 garLoopResultBuilder]: For program point L546-1(lines 546 552) no Hoare annotation was computed. [2022-03-17 23:17:54,845 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:17:54,845 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 23:17:54,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:17:54 BasicIcfg [2022-03-17 23:17:54,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 23:17:54,867 INFO L158 Benchmark]: Toolchain (without parser) took 16156.17ms. Allocated memory was 178.3MB in the beginning and 467.7MB in the end (delta: 289.4MB). Free memory was 119.4MB in the beginning and 165.6MB in the end (delta: -46.2MB). Peak memory consumption was 251.5MB. Max. memory is 8.0GB. [2022-03-17 23:17:54,868 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 130.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 23:17:54,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.60ms. Allocated memory was 178.3MB in the beginning and 324.0MB in the end (delta: 145.8MB). Free memory was 119.3MB in the beginning and 292.8MB in the end (delta: -173.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-17 23:17:54,868 INFO L158 Benchmark]: Boogie Preprocessor took 58.28ms. Allocated memory is still 324.0MB. Free memory was 292.8MB in the beginning and 290.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-17 23:17:54,868 INFO L158 Benchmark]: RCFGBuilder took 546.15ms. Allocated memory is still 324.0MB. Free memory was 290.2MB in the beginning and 261.9MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-17 23:17:54,868 INFO L158 Benchmark]: IcfgTransformer took 25.67ms. Allocated memory is still 324.0MB. Free memory was 261.9MB in the beginning and 258.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-17 23:17:54,869 INFO L158 Benchmark]: TraceAbstraction took 15140.03ms. Allocated memory was 324.0MB in the beginning and 467.7MB in the end (delta: 143.7MB). Free memory was 258.2MB in the beginning and 165.6MB in the end (delta: 92.6MB). Peak memory consumption was 244.6MB. Max. memory is 8.0GB. [2022-03-17 23:17:54,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 130.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.60ms. Allocated memory was 178.3MB in the beginning and 324.0MB in the end (delta: 145.8MB). Free memory was 119.3MB in the beginning and 292.8MB in the end (delta: -173.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.28ms. Allocated memory is still 324.0MB. Free memory was 292.8MB in the beginning and 290.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 546.15ms. Allocated memory is still 324.0MB. Free memory was 290.2MB in the beginning and 261.9MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * IcfgTransformer took 25.67ms. Allocated memory is still 324.0MB. Free memory was 261.9MB in the beginning and 258.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 15140.03ms. Allocated memory was 324.0MB in the beginning and 467.7MB in the end (delta: 143.7MB). Free memory was 258.2MB in the beginning and 165.6MB in the end (delta: 92.6MB). Peak memory consumption was 244.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 630]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 155 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 21, TraceHistogramMax: 26, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5781 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5779 mSDsluCounter, 5875 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 529 mSDsCounter, 527 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5784 IncrementalHoareTripleChecker+Invalid, 6311 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 527 mSolverCounterUnsat, 5346 mSDtfsCounter, 5784 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3611 GetRequests, 3531 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2726occurred in iteration=16, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 1119 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 53 PreInvPairs, 342 NumberOfFragments, 1120 HoareAnnotationTreeSize, 53 FomulaSimplifications, 3064 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 33 FomulaSimplificationsInter, 6816 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 8257 NumberOfCodeBlocks, 8257 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 9539 ConstructedInterpolants, 0 QuantifiedInterpolants, 13341 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3597 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 27 InterpolantComputations, 19 PerfectInterpolantSequences, 52197/52405 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 398]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8656 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state < 8656)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672) - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: (((((8448 == s__state && 2 == blastFlag) && !(s__hit == 0)) || ((8448 == s__state && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || ((8448 == s__state && !(s__hit == 0)) && 3 == blastFlag)) || (blastFlag == 0 && 8448 == s__state)) || ((8448 == s__state && 3 == s__s3__tmp__next_state___0) && 3 == blastFlag) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((s__state < 8576 && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672) - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8656 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state < 8656)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((((((blastFlag == 0 && !(8576 <= s__state)) || ((s__state < 8576 && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || (blastFlag == 1 && !(8576 <= s__state))) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 1 && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: ((!(s__hit == 0) && s__state <= 8672) || (blastFlag == 0 && !(8656 <= s__state))) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state < 8656) - InvariantResult [Line: 209]: Loop Invariant Derived loop invariant: (((blastFlag == 0 && 8672 <= s__state) || ((2 == blastFlag && !(s__hit == 0)) && 8672 <= s__state)) || ((s__s3__tmp__next_state___0 <= 8576 && 8672 <= s__state) && 3 == blastFlag)) || ((!(s__hit == 0) && 8672 <= s__state) && 3 == blastFlag) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: s__state <= 8672 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: (((blastFlag == 0 && s__state <= 8672) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state <= 8672) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((s__state < 8576 && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672) - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: ((blastFlag == 0 && 8672 <= s__state) || ((2 == blastFlag && !(s__hit == 0)) && 8672 <= s__state)) || ((!(s__hit == 0) && 8672 <= s__state) && 3 == blastFlag) - InvariantResult [Line: 386]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 336]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: ((blastFlag == 0 || ((s__state < 8576 && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || (!(s__hit == 0) && 3 == blastFlag)) || (2 == blastFlag && !(s__hit == 0)) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8656 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state < 8656)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672) - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: (((((((((((blastFlag == 0 || (2 == blastFlag && s__state == 8512)) || (blastFlag == 1 && 8496 == s__state)) || (2 == blastFlag && s__state == 8528)) || (2 == blastFlag && 8560 == s__state)) || (!(s__hit == 0) && 3 == blastFlag)) || (((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8672) && 8672 <= s__state) && 3 == blastFlag)) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state < 8656)) || ((s__state == 8656 && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || ((8448 == s__state && 3 == s__s3__tmp__next_state___0) && 3 == blastFlag)) || s__state == 3) || (2 == blastFlag && !(s__hit == 0))) || (s__state == 8544 && 2 == blastFlag) - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: (((((((((((blastFlag == 0 || (2 == blastFlag && s__state == 8512)) || (blastFlag == 1 && 8496 == s__state)) || (2 == blastFlag && s__state == 8528)) || (2 == blastFlag && 8560 == s__state)) || (!(s__hit == 0) && 3 == blastFlag)) || (((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8672) && 8672 <= s__state) && 3 == blastFlag)) || ((2 == blastFlag && s__s3__tmp__next_state___0 <= 8576) && s__state < 8656)) || ((s__state == 8656 && 2 == blastFlag) && s__s3__tmp__next_state___0 <= 8576)) || ((8448 == s__state && 3 == s__s3__tmp__next_state___0) && 3 == blastFlag)) || s__state == 3) || (2 == blastFlag && !(s__hit == 0))) || (s__state == 8544 && 2 == blastFlag) - InvariantResult [Line: 158]: Loop Invariant Derived loop invariant: ((((blastFlag == 0 && !(8576 <= s__state)) || ((!(s__hit == 0) && s__state <= 8672) && 3 == blastFlag)) || ((2 == blastFlag && !(s__hit == 0)) && s__state <= 8672)) || ((blastFlag == 0 && !(s__hit == 0)) && s__state <= 8672)) || (!(8576 <= s__state) && 2 == blastFlag) RESULT: Ultimate proved your program to be correct! [2022-03-17 23:17:54,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...