/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_NONE.epf -i ../../../trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:30:13,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:30:13,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:30:13,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:30:13,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:30:13,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:30:13,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:30:13,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:30:13,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:30:13,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:30:13,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:30:13,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:30:13,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:30:13,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:30:13,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:30:13,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:30:13,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:30:13,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:30:13,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:30:13,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:30:13,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:30:13,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:30:13,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:30:13,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:30:13,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 21:30:13,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 21:30:13,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 21:30:13,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 21:30:13,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 21:30:13,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 21:30:13,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 21:30:13,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 21:30:13,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 21:30:13,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 21:30:13,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 21:30:13,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 21:30:13,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 21:30:13,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 21:30:13,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:30:13,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:30:13,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:30:13,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:30:13,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:30:13,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:30:13,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:30:13,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:30:13,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:30:13,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:30:13,640 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:30:13,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:30:13,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:30:13,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:30:13,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:30:13,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:30:13,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:30:13,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:30:13,641 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:30:13,641 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:30:13,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:30:13,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:30:13,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:30:13,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:30:13,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:30:13,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:30:13,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:30:13,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:30:13,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:30:13,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:30:13,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:30:13,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:30:13,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:30:13,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:30:13,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:30:13,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:30:13,661 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:30:13,661 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:30:13,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:30:13,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:30:13,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:30:13,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:30:13,894 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:30:13,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c [2022-01-10 21:30:13,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3365b2c5e/c8659954636b4e2da157699b6f1b0ba8/FLAG04fee3521 [2022-01-10 21:30:14,350 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:30:14,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c [2022-01-10 21:30:14,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3365b2c5e/c8659954636b4e2da157699b6f1b0ba8/FLAG04fee3521 [2022-01-10 21:30:14,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3365b2c5e/c8659954636b4e2da157699b6f1b0ba8 [2022-01-10 21:30:14,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:30:14,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:30:14,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:30:14,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:30:14,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:30:14,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:30:14" (1/1) ... [2022-01-10 21:30:14,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f72bd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:14, skipping insertion in model container [2022-01-10 21:30:14,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:30:14" (1/1) ... [2022-01-10 21:30:14,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:30:14,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:30:14,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c[415,428] [2022-01-10 21:30:14,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:30:14,945 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:30:14,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_pair_symmetr2.c[415,428] [2022-01-10 21:30:14,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:30:15,027 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:30:15,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15 WrapperNode [2022-01-10 21:30:15,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:30:15,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:30:15,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:30:15,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:30:15,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,071 INFO L137 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2022-01-10 21:30:15,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:30:15,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:30:15,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:30:15,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:30:15,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:30:15,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:30:15,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:30:15,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:30:15,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:30:15,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:30:15,153 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 21:30:15,173 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 21:30:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:30:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:30:15,265 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:30:15,266 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:30:15,473 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:30:15,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:30:15,478 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 21:30:15,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:15 BoogieIcfgContainer [2022-01-10 21:30:15,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:30:15,480 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:30:15,480 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:30:15,481 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:30:15,498 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:15" (1/1) ... [2022-01-10 21:30:15,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:30:15 BasicIcfg [2022-01-10 21:30:15,604 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:30:15,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:30:15,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:30:15,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:30:15,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:30:14" (1/4) ... [2022-01-10 21:30:15,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd90578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:30:15, skipping insertion in model container [2022-01-10 21:30:15,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:15" (2/4) ... [2022-01-10 21:30:15,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd90578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:30:15, skipping insertion in model container [2022-01-10 21:30:15,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:15" (3/4) ... [2022-01-10 21:30:15,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd90578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:30:15, skipping insertion in model container [2022-01-10 21:30:15,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:30:15" (4/4) ... [2022-01-10 21:30:15,613 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.cTransformedIcfg [2022-01-10 21:30:15,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:30:15,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:30:15,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:30:15,672 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 21:30:15,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:30:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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 21:30:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 21:30:15,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:30:15,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:30:15,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:30:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:30:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2095734557, now seen corresponding path program 1 times [2022-01-10 21:30:15,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:30:15,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114284920] [2022-01-10 21:30:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:30:15,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:30:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:30:15,918 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 21:30:15,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:30:15,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114284920] [2022-01-10 21:30:15,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114284920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:30:15,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:30:15,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:30:15,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138276754] [2022-01-10 21:30:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:30:15,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:30:15,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:30:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:30:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:30:15,951 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 21:30:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:30:15,963 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2022-01-10 21:30:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:30:15,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-01-10 21:30:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:30:15,970 INFO L225 Difference]: With dead ends: 46 [2022-01-10 21:30:15,970 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 21:30:15,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:30:15,975 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:30:15,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:30:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 21:30:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 21:30:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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 21:30:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-01-10 21:30:16,001 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2022-01-10 21:30:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:30:16,002 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-01-10 21:30:16,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 21:30:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-01-10 21:30:16,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 21:30:16,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:30:16,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:30:16,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:30:16,003 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:30:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:30:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1310805537, now seen corresponding path program 1 times [2022-01-10 21:30:16,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:30:16,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739322000] [2022-01-10 21:30:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:30:16,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:30:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:30:16,157 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 21:30:16,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:30:16,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739322000] [2022-01-10 21:30:16,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739322000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:30:16,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:30:16,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:30:16,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225446196] [2022-01-10 21:30:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:30:16,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:30:16,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:30:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:30:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:30:16,161 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 21:30:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:30:16,245 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-01-10 21:30:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:30:16,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-01-10 21:30:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:30:16,246 INFO L225 Difference]: With dead ends: 40 [2022-01-10 21:30:16,247 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 21:30:16,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:30:16,248 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:30:16,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:30:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 21:30:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2022-01-10 21:30:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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 21:30:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-01-10 21:30:16,254 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2022-01-10 21:30:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:30:16,254 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-01-10 21:30:16,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 21:30:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-01-10 21:30:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:30:16,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:30:16,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:30:16,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:30:16,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:30:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:30:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -29183347, now seen corresponding path program 1 times [2022-01-10 21:30:16,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:30:16,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433935519] [2022-01-10 21:30:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:30:16,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:30:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:30:16,464 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 21:30:16,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:30:16,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433935519] [2022-01-10 21:30:16,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433935519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:30:16,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738822123] [2022-01-10 21:30:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:30:16,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:30:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:30:16,467 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 21:30:16,490 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 21:30:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:30:16,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:30:16,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:30:17,052 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 21:30:17,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:30:17,284 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 21:30:17,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738822123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:30:17,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:30:17,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 9 [2022-01-10 21:30:17,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830475372] [2022-01-10 21:30:17,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:30:17,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 21:30:17,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:30:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 21:30:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-10 21:30:17,287 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 21:30:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:30:17,913 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-01-10 21:30:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 21:30:17,914 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 19 [2022-01-10 21:30:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:30:17,915 INFO L225 Difference]: With dead ends: 76 [2022-01-10 21:30:17,915 INFO L226 Difference]: Without dead ends: 65 [2022-01-10 21:30:17,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 21:30:17,917 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 186 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 21:30:17,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 58 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 21:30:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-10 21:30:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2022-01-10 21:30:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 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 21:30:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-01-10 21:30:17,926 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 19 [2022-01-10 21:30:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:30:17,927 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-01-10 21:30:17,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 21:30:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-01-10 21:30:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 21:30:17,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:30:17,928 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:30:17,938 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 21:30:18,134 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 21:30:18,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:30:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:30:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1362057193, now seen corresponding path program 2 times [2022-01-10 21:30:18,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:30:18,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367208523] [2022-01-10 21:30:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:30:18,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:30:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:30:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 21:30:18,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:30:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367208523] [2022-01-10 21:30:18,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367208523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:30:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046318240] [2022-01-10 21:30:18,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 21:30:18,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:30:18,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:30:18,516 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 21:30:18,517 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 21:30:19,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 21:30:19,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:30:19,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 21:30:19,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:30:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:30:20,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:30:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 21:30:27,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046318240] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:30:27,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:30:27,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 10] total 22 [2022-01-10 21:30:27,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131540293] [2022-01-10 21:30:27,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:30:27,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 21:30:27,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:30:27,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 21:30:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=374, Unknown=1, NotChecked=0, Total=506 [2022-01-10 21:30:27,712 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 22 states have internal predecessors, (111), 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 21:30:46,219 WARN L228 SmtUtils]: Spent 16.91s on a formula simplification. DAG size of input: 56 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 21:31:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:31:04,484 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2022-01-10 21:31:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 21:31:04,485 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 22 states have internal predecessors, (111), 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 49 [2022-01-10 21:31:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:31:04,487 INFO L225 Difference]: With dead ends: 178 [2022-01-10 21:31:04,487 INFO L226 Difference]: Without dead ends: 161 [2022-01-10 21:31:04,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=209, Invalid=598, Unknown=5, NotChecked=0, Total=812 [2022-01-10 21:31:04,488 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 735 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:31:04,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 423 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 21:31:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-10 21:31:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 112. [2022-01-10 21:31:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 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 21:31:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2022-01-10 21:31:04,506 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 49 [2022-01-10 21:31:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:31:04,507 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2022-01-10 21:31:04,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 22 states have internal predecessors, (111), 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 21:31:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2022-01-10 21:31:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 21:31:04,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:31:04,510 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:31:04,520 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 21:31:04,717 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 21:31:04,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:31:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:31:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 612031211, now seen corresponding path program 3 times [2022-01-10 21:31:04,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:31:04,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784244426] [2022-01-10 21:31:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:31:04,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:31:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:31:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-10 21:31:05,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:31:05,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784244426] [2022-01-10 21:31:05,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784244426] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:31:05,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444924566] [2022-01-10 21:31:05,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 21:31:05,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:31:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:31:05,544 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 21:31:05,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process