/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/verifythis/lcp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 18:07:53,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 18:07:53,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 18:07:53,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 18:07:53,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 18:07:53,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 18:07:53,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 18:07:53,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 18:07:53,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 18:07:53,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 18:07:53,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 18:07:53,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 18:07:53,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 18:07:53,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 18:07:53,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 18:07:53,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 18:07:53,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 18:07:53,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 18:07:53,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 18:07:53,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 18:07:53,551 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 18:07:53,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 18:07:53,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 18:07:53,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 18:07:53,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 18:07:53,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 18:07:53,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 18:07:53,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 18:07:53,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 18:07:53,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 18:07:53,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 18:07:53,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 18:07:53,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 18:07:53,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 18:07:53,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 18:07:53,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 18:07:53,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 18:07:53,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 18:07:53,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 18:07:53,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 18:07:53,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 18:07:53,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 18:07:53,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 18:07:53,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 18:07:53,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 18:07:53,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 18:07:53,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 18:07:53,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 18:07:53,584 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 18:07:53,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 18:07:53,584 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 18:07:53,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 18:07:53,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 18:07:53,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 18:07:53,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 18:07:53,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 18:07:53,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 18:07:53,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 18:07:53,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 18:07:53,586 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 18:07:53,586 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 18:07:53,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 18:07:53,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 18:07:53,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 18:07:53,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 18:07:53,863 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 18:07:53,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/lcp.c [2022-03-18 18:07:53,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48fbc6d2f/fd065b4d07404d8aa6e5b29e97146057/FLAG2ec2f1561 [2022-03-18 18:07:54,305 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 18:07:54,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/lcp.c [2022-03-18 18:07:54,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48fbc6d2f/fd065b4d07404d8aa6e5b29e97146057/FLAG2ec2f1561 [2022-03-18 18:07:54,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48fbc6d2f/fd065b4d07404d8aa6e5b29e97146057 [2022-03-18 18:07:54,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 18:07:54,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 18:07:54,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 18:07:54,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 18:07:54,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 18:07:54,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7b0105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54, skipping insertion in model container [2022-03-18 18:07:54,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 18:07:54,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 18:07:54,512 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/lcp.c[515,528] [2022-03-18 18:07:54,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 18:07:54,570 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 18:07:54,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/lcp.c[515,528] [2022-03-18 18:07:54,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 18:07:54,617 INFO L208 MainTranslator]: Completed translation [2022-03-18 18:07:54,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54 WrapperNode [2022-03-18 18:07:54,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 18:07:54,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 18:07:54,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 18:07:54,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 18:07:54,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 18:07:54,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 18:07:54,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 18:07:54,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 18:07:54,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (1/1) ... [2022-03-18 18:07:54,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 18:07:54,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:07:54,696 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) [2022-03-18 18:07:54,715 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 [2022-03-18 18:07:54,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 18:07:54,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 18:07:54,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 18:07:54,735 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 18:07:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 18:07:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lcp [2022-03-18 18:07:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-03-18 18:07:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 18:07:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-18 18:07:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-18 18:07:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-18 18:07:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 18:07:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 18:07:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 18:07:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure lcp [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 18:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-18 18:07:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 18:07:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 18:07:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 18:07:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 18:07:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 18:07:54,832 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 18:07:54,834 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 18:07:55,040 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 18:07:55,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 18:07:55,045 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 18:07:55,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:07:55 BoogieIcfgContainer [2022-03-18 18:07:55,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 18:07:55,048 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 18:07:55,048 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 18:07:55,055 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 18:07:55,058 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:07:55" (1/1) ... [2022-03-18 18:07:55,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 06:07:55 BasicIcfg [2022-03-18 18:07:55,086 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 18:07:55,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 18:07:55,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 18:07:55,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 18:07:55,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 06:07:54" (1/4) ... [2022-03-18 18:07:55,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db4cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 06:07:55, skipping insertion in model container [2022-03-18 18:07:55,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:07:54" (2/4) ... [2022-03-18 18:07:55,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db4cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 06:07:55, skipping insertion in model container [2022-03-18 18:07:55,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:07:55" (3/4) ... [2022-03-18 18:07:55,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db4cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 06:07:55, skipping insertion in model container [2022-03-18 18:07:55,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 06:07:55" (4/4) ... [2022-03-18 18:07:55,097 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.cJordan [2022-03-18 18:07:55,102 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 18:07:55,102 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 18:07:55,150 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 18:07:55,157 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 18:07:55,157 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 18:07:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 18:07:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 18:07:55,179 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:07:55,179 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:07:55,180 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:07:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:07:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1603802952, now seen corresponding path program 1 times [2022-03-18 18:07:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:07:55,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121302021] [2022-03-18 18:07:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:07:55,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:07:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 18:07:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 18:07:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 18:07:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 18:07:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 18:07:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 18:07:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 18:07:55,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:07:55,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121302021] [2022-03-18 18:07:55,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121302021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:07:55,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:07:55,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 18:07:55,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175381006] [2022-03-18 18:07:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:07:55,453 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 18:07:55,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:07:55,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 18:07:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 18:07:55,475 INFO L87 Difference]: Start difference. First operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 18:07:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:07:55,607 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-03-18 18:07:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 18:07:55,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-03-18 18:07:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:07:55,625 INFO L225 Difference]: With dead ends: 49 [2022-03-18 18:07:55,625 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 18:07:55,627 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 18:07:55,629 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 56 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:07:55,630 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 43 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 18:07:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 18:07:55,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-18 18:07:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:07:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-03-18 18:07:55,675 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 41 [2022-03-18 18:07:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:07:55,676 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-03-18 18:07:55,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 18:07:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-03-18 18:07:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 18:07:55,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:07:55,678 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:07:55,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 18:07:55,678 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:07:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:07:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash -345645567, now seen corresponding path program 1 times [2022-03-18 18:07:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:07:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27253444] [2022-03-18 18:07:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:07:55,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:07:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 18:07:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 18:07:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 18:07:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 18:07:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 18:07:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 18:07:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 18:07:55,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:07:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27253444] [2022-03-18 18:07:55,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27253444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:07:55,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:07:55,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 18:07:55,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326618778] [2022-03-18 18:07:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:07:55,911 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 18:07:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:07:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 18:07:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-03-18 18:07:55,912 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-18 18:07:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:07:56,198 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-03-18 18:07:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 18:07:56,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-03-18 18:07:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:07:56,203 INFO L225 Difference]: With dead ends: 45 [2022-03-18 18:07:56,203 INFO L226 Difference]: Without dead ends: 42 [2022-03-18 18:07:56,205 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-03-18 18:07:56,207 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 65 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 18:07:56,209 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 41 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 18:07:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-18 18:07:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-18 18:07:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:07:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-03-18 18:07:56,224 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2022-03-18 18:07:56,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:07:56,225 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-03-18 18:07:56,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-18 18:07:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-03-18 18:07:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 18:07:56,229 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:07:56,229 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:07:56,229 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 18:07:56,229 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:07:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:07:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1342717920, now seen corresponding path program 1 times [2022-03-18 18:07:56,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:07:56,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741962685] [2022-03-18 18:07:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:07:56,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:07:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 18:07:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 18:07:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 18:07:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 18:07:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 18:07:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 18:07:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 18:07:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:07:56,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741962685] [2022-03-18 18:07:56,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741962685] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:07:56,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:07:56,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 18:07:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728034916] [2022-03-18 18:07:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:07:56,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 18:07:56,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:07:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 18:07:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-03-18 18:07:56,521 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-18 18:07:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:07:56,914 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-03-18 18:07:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 18:07:56,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-03-18 18:07:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:07:56,916 INFO L225 Difference]: With dead ends: 46 [2022-03-18 18:07:56,916 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 18:07:56,916 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-03-18 18:07:56,917 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 18:07:56,917 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 18:07:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 18:07:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-18 18:07:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 10 states have call successors, (10), 8 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:07:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-03-18 18:07:56,922 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 43 [2022-03-18 18:07:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:07:56,922 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-03-18 18:07:56,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-18 18:07:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-03-18 18:07:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 18:07:56,925 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:07:56,925 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-03-18 18:07:56,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 18:07:56,926 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:07:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:07:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1707305611, now seen corresponding path program 1 times [2022-03-18 18:07:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:07:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340488078] [2022-03-18 18:07:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:07:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:07:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 18:07:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 18:07:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 18:07:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 18:07:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 18:07:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 18:07:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 18:07:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 18:07:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:07:57,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340488078] [2022-03-18 18:07:57,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340488078] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:07:57,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:07:57,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 18:07:57,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952035199] [2022-03-18 18:07:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:07:57,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 18:07:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:07:57,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 18:07:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-03-18 18:07:57,279 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 18:07:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:07:57,691 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-03-18 18:07:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 18:07:57,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2022-03-18 18:07:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:07:57,693 INFO L225 Difference]: With dead ends: 59 [2022-03-18 18:07:57,693 INFO L226 Difference]: Without dead ends: 48 [2022-03-18 18:07:57,694 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-03-18 18:07:57,695 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 18:07:57,695 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 42 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 18:07:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-18 18:07:57,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-03-18 18:07:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 10 states have call successors, (10), 8 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:07:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-03-18 18:07:57,700 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 50 [2022-03-18 18:07:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:07:57,700 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-03-18 18:07:57,701 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 18:07:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-03-18 18:07:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 18:07:57,701 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:07:57,702 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-18 18:07:57,702 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 18:07:57,702 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:07:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:07:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -573911401, now seen corresponding path program 1 times [2022-03-18 18:07:57,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:07:57,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949361458] [2022-03-18 18:07:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:07:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:07:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 18:07:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 18:07:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 18:07:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 18:07:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 18:07:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 18:07:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 18:07:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-18 18:07:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:07:57,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949361458] [2022-03-18 18:07:57,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949361458] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 18:07:57,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880741387] [2022-03-18 18:07:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:07:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:07:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:07:57,939 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) [2022-03-18 18:07:57,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 18:07:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:07:58,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-18 18:07:58,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:07:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-18 18:07:58,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:07:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-18 18:07:58,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880741387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:07:58,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 18:07:58,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 14 [2022-03-18 18:07:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142133846] [2022-03-18 18:07:58,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 18:07:58,963 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 18:07:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:07:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 18:07:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-03-18 18:07:58,964 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 18:07:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:07:59,317 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-03-18 18:07:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 18:07:59,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-03-18 18:07:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:07:59,318 INFO L225 Difference]: With dead ends: 44 [2022-03-18 18:07:59,318 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 18:07:59,318 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-03-18 18:07:59,319 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 18:07:59,319 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 43 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 18:07:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 18:07:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 18:07:59,320 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) [2022-03-18 18:07:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 18:07:59,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-03-18 18:07:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:07:59,321 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 18:07:59,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 18:07:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 18:07:59,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 18:07:59,323 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 18:07:59,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 18:07:59,533 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:07:59,537 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-18 18:07:59,538 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 18:07:59,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 06:07:59 BasicIcfg [2022-03-18 18:07:59,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 18:07:59,540 INFO L158 Benchmark]: Toolchain (without parser) took 5216.17ms. Allocated memory was 182.5MB in the beginning and 300.9MB in the end (delta: 118.5MB). Free memory was 125.6MB in the beginning and 218.8MB in the end (delta: -93.1MB). Peak memory consumption was 25.0MB. Max. memory is 8.0GB. [2022-03-18 18:07:59,541 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory was 142.5MB in the beginning and 142.3MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 18:07:59,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.07ms. Allocated memory was 182.5MB in the beginning and 300.9MB in the end (delta: 118.5MB). Free memory was 125.4MB in the beginning and 273.2MB in the end (delta: -147.8MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-03-18 18:07:59,541 INFO L158 Benchmark]: Boogie Preprocessor took 47.36ms. Allocated memory is still 300.9MB. Free memory was 273.2MB in the beginning and 271.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 18:07:59,542 INFO L158 Benchmark]: RCFGBuilder took 380.42ms. Allocated memory is still 300.9MB. Free memory was 271.6MB in the beginning and 258.0MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-18 18:07:59,542 INFO L158 Benchmark]: IcfgTransformer took 38.04ms. Allocated memory is still 300.9MB. Free memory was 258.0MB in the beginning and 256.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 18:07:59,542 INFO L158 Benchmark]: TraceAbstraction took 4451.36ms. Allocated memory is still 300.9MB. Free memory was 255.9MB in the beginning and 218.8MB in the end (delta: 37.1MB). Peak memory consumption was 37.9MB. Max. memory is 8.0GB. [2022-03-18 18:07:59,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory was 142.5MB in the beginning and 142.3MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 292.07ms. Allocated memory was 182.5MB in the beginning and 300.9MB in the end (delta: 118.5MB). Free memory was 125.4MB in the beginning and 273.2MB in the end (delta: -147.8MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.36ms. Allocated memory is still 300.9MB. Free memory was 273.2MB in the beginning and 271.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 380.42ms. Allocated memory is still 300.9MB. Free memory was 271.6MB in the beginning and 258.0MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 38.04ms. Allocated memory is still 300.9MB. Free memory was 258.0MB in the beginning and 256.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 4451.36ms. Allocated memory is still 300.9MB. Free memory was 255.9MB in the beginning and 218.8MB in the end (delta: 37.1MB). Peak memory consumption was 37.9MB. 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: 13]: 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 8 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 324 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 181 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1269 IncrementalHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 181 mSolverCounterUnsat, 157 mSDtfsCounter, 1269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 283 NumberOfCodeBlocks, 283 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 1274 SizeOfPredicates, 13 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 95/101 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-18 18:07:59,574 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...