/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/discover_list.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:29:51,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:29:51,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:29:51,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:29:51,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:29:51,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:29:51,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:29:51,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:29:51,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:29:51,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:29:51,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:29:51,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:29:51,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:29:51,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:29:51,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:29:51,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:29:51,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:29:51,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:29:51,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:29:51,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:29:51,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:29:51,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:29:51,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:29:51,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:29:51,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:29:51,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:29:51,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:29:51,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:29:51,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:29:51,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:29:51,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:29:51,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:29:51,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:29:51,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:29:51,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:29:51,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:29:51,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:29:51,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:29:51,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:29:51,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:29:51,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:29:51,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:29:51,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:29:51,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:29:51,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:29:51,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:29:51,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:29:51,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:29:51,605 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:29:51,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:29:51,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:29:51,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:29:51,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:29:51,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:29:51,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:29:51,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:29:51,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:29:51,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:29:51,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:29:51,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:29:51,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:29:51,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:29:51,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:29:51,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:29:51,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:29:51,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:29:51,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:29:51,611 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:29:51,611 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:29:51,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:29:51,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:29:51,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:29:51,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:29:51,891 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:29:51,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/discover_list.c [2022-01-10 14:29:51,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762c4f6ac/91f59f97df194e09bec812fb75557044/FLAG2ebc923dd [2022-01-10 14:29:52,462 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:29:52,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/discover_list.c [2022-01-10 14:29:52,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762c4f6ac/91f59f97df194e09bec812fb75557044/FLAG2ebc923dd [2022-01-10 14:29:52,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762c4f6ac/91f59f97df194e09bec812fb75557044 [2022-01-10 14:29:52,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:29:52,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:29:52,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:29:52,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:29:52,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:29:52,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:52" (1/1) ... [2022-01-10 14:29:52,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c2e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:52, skipping insertion in model container [2022-01-10 14:29:52,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:52" (1/1) ... [2022-01-10 14:29:52,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:29:53,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:29:53,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/discover_list.c[4997,5010] [2022-01-10 14:29:53,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:29:53,261 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:29:53,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/discover_list.c[4997,5010] [2022-01-10 14:29:53,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:29:53,383 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:29:53,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53 WrapperNode [2022-01-10 14:29:53,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:29:53,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:29:53,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:29:53,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:29:53,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,463 INFO L137 Inliner]: procedures = 41, calls = 627, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 534 [2022-01-10 14:29:53,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:29:53,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:29:53,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:29:53,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:29:53,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:29:53,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:29:53,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:29:53,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:29:53,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (1/1) ... [2022-01-10 14:29:53,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:29:53,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:29:53,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:29:53,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 14:29:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure smp_send_req [2022-01-10 14:29:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 14:29:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:29:53,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:29:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 14:29:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 14:29:53,734 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:29:53,736 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:29:54,315 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:29:54,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:29:54,321 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:29:54,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:54 BoogieIcfgContainer [2022-01-10 14:29:54,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:29:54,323 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:29:54,323 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:29:54,325 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:29:54,327 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:54" (1/1) ... [2022-01-10 14:29:54,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:29:54 BasicIcfg [2022-01-10 14:29:54,639 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:29:54,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:29:54,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:29:54,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:29:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:29:52" (1/4) ... [2022-01-10 14:29:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac024f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:29:54, skipping insertion in model container [2022-01-10 14:29:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:53" (2/4) ... [2022-01-10 14:29:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac024f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:29:54, skipping insertion in model container [2022-01-10 14:29:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:54" (3/4) ... [2022-01-10 14:29:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac024f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:29:54, skipping insertion in model container [2022-01-10 14:29:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:29:54" (4/4) ... [2022-01-10 14:29:54,653 INFO L111 eAbstractionObserver]: Analyzing ICFG discover_list.cTransformedIcfg [2022-01-10 14:29:54,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:29:54,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 14:29:54,712 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:29:54,719 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:29:54,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 14:29:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 75 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 14:29:54,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:54,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:29:54,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:29:54,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:54,749 INFO L85 PathProgramCache]: Analyzing trace with hash -21315607, now seen corresponding path program 1 times [2022-01-10 14:29:54,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:54,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107865149] [2022-01-10 14:29:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:54,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:55,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107865149] [2022-01-10 14:29:55,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107865149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:29:55,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:29:55,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:29:55,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597900940] [2022-01-10 14:29:55,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:29:55,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:29:55,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:29:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:29:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:29:55,276 INFO L87 Difference]: Start difference. First operand has 76 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 75 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:29:55,334 INFO L93 Difference]: Finished difference Result 144 states and 218 transitions. [2022-01-10 14:29:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:29:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-10 14:29:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:29:55,345 INFO L225 Difference]: With dead ends: 144 [2022-01-10 14:29:55,346 INFO L226 Difference]: Without dead ends: 66 [2022-01-10 14:29:55,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:29:55,357 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:29:55,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:29:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-10 14:29:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-01-10 14:29:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 65 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2022-01-10 14:29:55,397 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 28 [2022-01-10 14:29:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:29:55,398 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2022-01-10 14:29:55,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2022-01-10 14:29:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 14:29:55,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:55,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:29:55,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:29:55,400 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:29:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash -844286845, now seen corresponding path program 1 times [2022-01-10 14:29:55,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:55,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98292977] [2022-01-10 14:29:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:55,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:29:55,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98292977] [2022-01-10 14:29:55,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98292977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:29:55,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:29:55,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:29:55,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889720163] [2022-01-10 14:29:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:29:55,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:29:55,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:29:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:29:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:29:55,669 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:29:56,097 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2022-01-10 14:29:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:29:56,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-10 14:29:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:29:56,099 INFO L225 Difference]: With dead ends: 128 [2022-01-10 14:29:56,099 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 14:29:56,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:29:56,101 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 1 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 14:29:56,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 249 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 14:29:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 14:29:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-01-10 14:29:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 67 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2022-01-10 14:29:56,114 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 30 [2022-01-10 14:29:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:29:56,114 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2022-01-10 14:29:56,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2022-01-10 14:29:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 14:29:56,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:56,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:29:56,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:29:56,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:29:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -911293598, now seen corresponding path program 1 times [2022-01-10 14:29:56,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:56,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298890686] [2022-01-10 14:29:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:56,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:29:56,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:56,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298890686] [2022-01-10 14:29:56,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298890686] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:29:56,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255772677] [2022-01-10 14:29:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:56,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:29:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:29:56,397 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) [2022-01-10 14:29:56,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:29:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:56,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 14:29:56,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:29:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:57,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:29:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 14:29:57,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255772677] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:29:57,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:29:57,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2022-01-10 14:29:57,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995940128] [2022-01-10 14:29:57,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:29:57,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 14:29:57,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:29:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 14:29:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 14:29:57,123 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:29:57,251 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2022-01-10 14:29:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:29:57,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-10 14:29:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:29:57,252 INFO L225 Difference]: With dead ends: 135 [2022-01-10 14:29:57,253 INFO L226 Difference]: Without dead ends: 81 [2022-01-10 14:29:57,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:29:57,254 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:29:57,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 438 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:29:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-10 14:29:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-01-10 14:29:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 80 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2022-01-10 14:29:57,265 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 30 [2022-01-10 14:29:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:29:57,265 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2022-01-10 14:29:57,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2022-01-10 14:29:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 14:29:57,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:57,266 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:29:57,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:29:57,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:29:57,491 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:29:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 40574856, now seen corresponding path program 2 times [2022-01-10 14:29:57,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332033443] [2022-01-10 14:29:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:57,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 14:29:57,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:57,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332033443] [2022-01-10 14:29:57,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332033443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:29:57,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656842981] [2022-01-10 14:29:57,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:29:57,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:29:57,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:29:57,948 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) [2022-01-10 14:29:57,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:30:01,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:30:01,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:30:01,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 14:30:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:30:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 14:30:02,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:30:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 14:30:02,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656842981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:30:02,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:30:02,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2022-01-10 14:30:02,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648985416] [2022-01-10 14:30:02,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:30:02,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 14:30:02,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:30:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 14:30:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-10 14:30:02,184 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:30:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:30:02,725 INFO L93 Difference]: Finished difference Result 159 states and 204 transitions. [2022-01-10 14:30:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:30:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-10 14:30:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:30:02,727 INFO L225 Difference]: With dead ends: 159 [2022-01-10 14:30:02,727 INFO L226 Difference]: Without dead ends: 95 [2022-01-10 14:30:02,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=540, Unknown=0, NotChecked=0, Total=756 [2022-01-10 14:30:02,729 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 72 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:30:02,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 489 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 14:30:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-10 14:30:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-01-10 14:30:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 94 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:30:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2022-01-10 14:30:02,739 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 38 [2022-01-10 14:30:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:30:02,740 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2022-01-10 14:30:02,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:30:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2022-01-10 14:30:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 14:30:02,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:30:02,741 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:30:02,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 14:30:02,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 14:30:02,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 14:30:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:30:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1398972744, now seen corresponding path program 3 times [2022-01-10 14:30:02,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:30:02,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823322739] [2022-01-10 14:30:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:30:02,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:30:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:30:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 14:30:03,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:30:03,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823322739] [2022-01-10 14:30:03,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823322739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:30:03,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233970238] [2022-01-10 14:30:03,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 14:30:03,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:30:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:30:03,512 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) [2022-01-10 14:30:03,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:30:50,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-10 14:30:50,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:30:50,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 106 conjunts are in the unsatisfiable core [2022-01-10 14:30:50,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:30:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 14:30:51,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:30:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 14:30:52,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233970238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:30:52,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:30:52,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 13] total 45 [2022-01-10 14:30:52,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105301618] [2022-01-10 14:30:52,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:30:52,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-10 14:30:52,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:30:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-10 14:30:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2022-01-10 14:30:52,445 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 45 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:30:58,466 WARN L228 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 55 DAG size of output: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)