/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_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:09:29,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:09:29,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:09:29,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:09:29,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:09:29,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:09:29,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:09:29,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:09:29,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:09:29,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:09:29,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:09:29,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:09:29,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:09:29,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:09:29,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:09:29,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:09:29,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:09:29,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:09:29,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:09:29,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:09:29,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:09:29,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:09:29,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:09:29,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:09:29,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:09:29,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:09:29,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:09:29,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:09:29,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:09:29,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:09:29,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:09:29,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:09:29,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:09:29,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:09:29,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:09:29,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:09:29,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:09:29,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:09:29,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:09:29,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:09:29,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:09:29,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:09:29,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:09:29,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:09:29,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:09:29,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:09:29,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:09:29,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:09:29,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:09:29,770 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:09:29,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:09:29,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:09:29,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:09:29,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:09:29,772 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:09:29,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:09:29,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:09:29,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:09:29,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:09:29,773 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:09:29,773 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:09:29,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:09:29,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:09:29,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:09:29,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:09:29,982 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:09:29,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound1.c [2022-01-10 09:09:30,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d902c1556/7f7eada12d3b40cc80e89998adea020a/FLAG5d0651f67 [2022-01-10 09:09:30,354 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:09:30,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound1.c [2022-01-10 09:09:30,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d902c1556/7f7eada12d3b40cc80e89998adea020a/FLAG5d0651f67 [2022-01-10 09:09:30,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d902c1556/7f7eada12d3b40cc80e89998adea020a [2022-01-10 09:09:30,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:09:30,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:09:30,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:09:30,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:09:30,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:09:30,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:09:30" (1/1) ... [2022-01-10 09:09:30,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5fa2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:30, skipping insertion in model container [2022-01-10 09:09:30,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:09:30" (1/1) ... [2022-01-10 09:09:30,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:09:30,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:09:30,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound1.c[526,539] [2022-01-10 09:09:30,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:09:30,987 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:09:31,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound1.c[526,539] [2022-01-10 09:09:31,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:09:31,024 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:09:31,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31 WrapperNode [2022-01-10 09:09:31,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:09:31,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:09:31,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:09:31,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:09:31,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,056 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 95 [2022-01-10 09:09:31,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:09:31,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:09:31,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:09:31,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:09:31,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:09:31,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:09:31,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:09:31,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:09:31,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:09:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:31,097 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 09:09:31,134 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 09:09:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:09:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:09:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:09:31,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:09:31,191 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:09:31,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:09:31,362 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:09:31,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:09:31,367 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 09:09:31,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:09:31 BoogieIcfgContainer [2022-01-10 09:09:31,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:09:31,368 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:09:31,369 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:09:31,369 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:09:31,371 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:09:31" (1/1) ... [2022-01-10 09:09:31,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:09:31 BasicIcfg [2022-01-10 09:09:31,450 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:09:31,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:09:31,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:09:31,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:09:31,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:09:30" (1/4) ... [2022-01-10 09:09:31,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4dbbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:09:31, skipping insertion in model container [2022-01-10 09:09:31,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:09:31" (2/4) ... [2022-01-10 09:09:31,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4dbbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:09:31, skipping insertion in model container [2022-01-10 09:09:31,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:09:31" (3/4) ... [2022-01-10 09:09:31,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4dbbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:09:31, skipping insertion in model container [2022-01-10 09:09:31,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:09:31" (4/4) ... [2022-01-10 09:09:31,455 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound1.cTransformedIcfg [2022-01-10 09:09:31,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:09:31,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-10 09:09:31,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:09:31,492 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 09:09:31,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-10 09:09:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 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 09:09:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 09:09:31,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:31,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 09:09:31,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash 291488364, now seen corresponding path program 1 times [2022-01-10 09:09:31,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:31,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477843565] [2022-01-10 09:09:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:31,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:31,640 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 09:09:31,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:31,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477843565] [2022-01-10 09:09:31,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477843565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:09:31,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:09:31,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:09:31,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042518064] [2022-01-10 09:09:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:09:31,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:09:31,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:09:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:09:31,664 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 09:09:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:31,730 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2022-01-10 09:09:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:09:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-01-10 09:09:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:31,737 INFO L225 Difference]: With dead ends: 107 [2022-01-10 09:09:31,737 INFO L226 Difference]: Without dead ends: 60 [2022-01-10 09:09:31,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:09:31,742 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 64 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:31,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 78 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:09:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-10 09:09:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 35. [2022-01-10 09:09:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 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 09:09:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-10 09:09:31,766 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 6 [2022-01-10 09:09:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-10 09:09:31,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 09:09:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-10 09:09:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 09:09:31,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:31,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:31,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:09:31,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 946339058, now seen corresponding path program 1 times [2022-01-10 09:09:31,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523418207] [2022-01-10 09:09:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:31,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:31,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:09:31,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248282266] [2022-01-10 09:09:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:31,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:31,838 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 09:09:31,850 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 09:09:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:31,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:09:31,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:09:31,964 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 09:09:31,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:09:31,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:31,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523418207] [2022-01-10 09:09:31,965 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:09:31,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248282266] [2022-01-10 09:09:31,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248282266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:09:31,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:09:31,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:09:31,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930965117] [2022-01-10 09:09:31,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:09:31,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:09:31,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:09:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:09:31,967 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:09:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:31,979 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-01-10 09:09:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:09:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-01-10 09:09:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:31,981 INFO L225 Difference]: With dead ends: 57 [2022-01-10 09:09:31,981 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 09:09:31,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:09:31,982 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:31,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:09:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 09:09:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-10 09:09:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 36 states have internal predecessors, (41), 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 09:09:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-01-10 09:09:31,987 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2022-01-10 09:09:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:31,987 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-01-10 09:09:31,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:09:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-01-10 09:09:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 09:09:31,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:31,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:32,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 09:09:32,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:32,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash 947480115, now seen corresponding path program 1 times [2022-01-10 09:09:32,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:32,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322630214] [2022-01-10 09:09:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:32,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:32,313 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 09:09:32,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:32,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322630214] [2022-01-10 09:09:32,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322630214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:09:32,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:09:32,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:09:32,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543814171] [2022-01-10 09:09:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:09:32,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:09:32,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:09:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:09:32,315 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 09:09:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:32,381 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-01-10 09:09:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:09:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-01-10 09:09:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:32,383 INFO L225 Difference]: With dead ends: 57 [2022-01-10 09:09:32,383 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 09:09:32,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:09:32,387 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:32,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:09:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 09:09:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2022-01-10 09:09:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 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 09:09:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-10 09:09:32,392 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2022-01-10 09:09:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:32,392 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-10 09:09:32,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 09:09:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-10 09:09:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:09:32,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:32,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:32,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 09:09:32,393 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash -4639207, now seen corresponding path program 1 times [2022-01-10 09:09:32,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:32,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870525860] [2022-01-10 09:09:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:32,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:32,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:09:32,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863512900] [2022-01-10 09:09:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:32,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:32,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:32,426 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 09:09:32,489 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 09:09:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:32,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 09:09:32,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:09:32,633 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 09:09:32,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:09:32,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870525860] [2022-01-10 09:09:32,634 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:09:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863512900] [2022-01-10 09:09:32,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863512900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:09:32,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:09:32,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:09:32,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926395951] [2022-01-10 09:09:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:09:32,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 09:09:32,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 09:09:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 09:09:32,637 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 09:09:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:32,722 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-01-10 09:09:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:09:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-01-10 09:09:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:32,723 INFO L225 Difference]: With dead ends: 79 [2022-01-10 09:09:32,723 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 09:09:32,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:09:32,724 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:32,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 105 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:09:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 09:09:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-01-10 09:09:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 50 states have internal predecessors, (58), 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 09:09:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-01-10 09:09:32,729 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 10 [2022-01-10 09:09:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:32,729 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-01-10 09:09:32,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 09:09:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-01-10 09:09:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 09:09:32,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:32,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:32,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 09:09:32,945 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 09:09:32,946 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2123170500, now seen corresponding path program 1 times [2022-01-10 09:09:32,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:32,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119679615] [2022-01-10 09:09:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:32,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:32,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:09:32,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748229047] [2022-01-10 09:09:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:32,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:32,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:32,959 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 09:09:32,980 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 09:09:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 09:09:33,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:09:33,319 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 09:09:33,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:09:33,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119679615] [2022-01-10 09:09:33,320 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:09:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748229047] [2022-01-10 09:09:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748229047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:09:33,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:09:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:09:33,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430520096] [2022-01-10 09:09:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:09:33,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:09:33,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:09:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:09:33,322 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 09:09:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:33,342 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-01-10 09:09:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:09:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-01-10 09:09:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:33,343 INFO L225 Difference]: With dead ends: 58 [2022-01-10 09:09:33,343 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 09:09:33,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:09:33,344 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:33,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 131 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:09:33,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 09:09:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-01-10 09:09:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 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 09:09:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-01-10 09:09:33,349 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 15 [2022-01-10 09:09:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:33,349 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-01-10 09:09:33,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 09:09:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-01-10 09:09:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 09:09:33,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:33,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:33,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:09:33,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:33,566 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1393739377, now seen corresponding path program 1 times [2022-01-10 09:09:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:33,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854366279] [2022-01-10 09:09:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:33,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:33,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:09:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753187823] [2022-01-10 09:09:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:33,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:33,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:33,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:09:33,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:09:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:33,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 09:09:33,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:09:33,840 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 09:09:33,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:09:33,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:33,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854366279] [2022-01-10 09:09:33,840 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:09:33,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753187823] [2022-01-10 09:09:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753187823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:09:33,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:09:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:09:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364621704] [2022-01-10 09:09:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:09:33,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:09:33,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:09:33,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:09:33,842 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 09:09:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:33,895 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-01-10 09:09:33,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:09:33,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-01-10 09:09:33,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:33,896 INFO L225 Difference]: With dead ends: 66 [2022-01-10 09:09:33,896 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 09:09:33,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 09:09:33,897 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:33,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 53 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:09:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 09:09:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2022-01-10 09:09:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 51 states have internal predecessors, (60), 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 09:09:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2022-01-10 09:09:33,902 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 16 [2022-01-10 09:09:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:33,902 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2022-01-10 09:09:33,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 09:09:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-01-10 09:09:33,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 09:09:33,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:33,903 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:33,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 09:09:34,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:34,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:34,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1986650129, now seen corresponding path program 1 times [2022-01-10 09:09:34,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:34,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325202748] [2022-01-10 09:09:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:34,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:34,132 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:09:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702985050] [2022-01-10 09:09:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:34,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:34,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:09:34,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 09:09:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:09:34,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 09:09:34,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:09:46,990 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 09:09:46,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:09:49,286 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 09:09:49,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:09:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325202748] [2022-01-10 09:09:49,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:09:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702985050] [2022-01-10 09:09:49,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702985050] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:09:49,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:09:49,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 09:09:49,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166959605] [2022-01-10 09:09:49,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:09:49,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 09:09:49,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:09:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 09:09:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=89, Unknown=6, NotChecked=0, Total=132 [2022-01-10 09:09:49,288 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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 09:09:49,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:09:49,335 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2022-01-10 09:09:49,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:09:49,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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 09:09:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:09:49,336 INFO L225 Difference]: With dead ends: 62 [2022-01-10 09:09:49,336 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 09:09:49,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=37, Invalid=89, Unknown=6, NotChecked=0, Total=132 [2022-01-10 09:09:49,337 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:09:49,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 76 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-01-10 09:09:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 09:09:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 09:09:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 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 09:09:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2022-01-10 09:09:49,340 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 19 [2022-01-10 09:09:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:09:49,340 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2022-01-10 09:09:49,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 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 09:09:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2022-01-10 09:09:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 09:09:49,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:09:49,340 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:49,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 09:09:49,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:49,546 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 09:09:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:09:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1420258997, now seen corresponding path program 1 times [2022-01-10 09:09:49,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:09:49,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961065434] [2022-01-10 09:09:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:49,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:09:49,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:09:49,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230781265] [2022-01-10 09:09:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:09:49,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:49,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:09:49,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:09:49,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 09:09:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 09:09:49,638 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 09:09:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 09:09:49,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 09:09:49,661 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 09:09:49,662 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-01-10 09:09:49,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-01-10 09:09:49,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-01-10 09:09:49,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-01-10 09:09:49,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-01-10 09:09:49,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-01-10 09:09:49,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-01-10 09:09:49,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 09:09:49,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:09:49,867 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:09:49,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 09:09:49,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:09:49 BasicIcfg [2022-01-10 09:09:49,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 09:09:49,905 INFO L158 Benchmark]: Toolchain (without parser) took 19126.80ms. Allocated memory was 210.8MB in the beginning and 314.6MB in the end (delta: 103.8MB). Free memory was 158.5MB in the beginning and 208.7MB in the end (delta: -50.2MB). Peak memory consumption was 54.7MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,905 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory was 175.2MB in the beginning and 175.2MB in the end (delta: 66.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 09:09:49,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.74ms. Allocated memory was 210.8MB in the beginning and 314.6MB in the end (delta: 103.8MB). Free memory was 158.3MB in the beginning and 290.0MB in the end (delta: -131.7MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.46ms. Allocated memory is still 314.6MB. Free memory was 290.0MB in the beginning and 288.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,906 INFO L158 Benchmark]: Boogie Preprocessor took 15.02ms. Allocated memory is still 314.6MB. Free memory was 288.2MB in the beginning and 287.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,906 INFO L158 Benchmark]: RCFGBuilder took 295.93ms. Allocated memory is still 314.6MB. Free memory was 287.2MB in the beginning and 276.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,906 INFO L158 Benchmark]: IcfgTransformer took 82.09ms. Allocated memory is still 314.6MB. Free memory was 276.0MB in the beginning and 271.4MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,907 INFO L158 Benchmark]: TraceAbstraction took 18453.54ms. Allocated memory is still 314.6MB. Free memory was 271.2MB in the beginning and 208.7MB in the end (delta: 62.4MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2022-01-10 09:09:49,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory was 175.2MB in the beginning and 175.2MB in the end (delta: 66.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.74ms. Allocated memory was 210.8MB in the beginning and 314.6MB in the end (delta: 103.8MB). Free memory was 158.3MB in the beginning and 290.0MB in the end (delta: -131.7MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.46ms. Allocated memory is still 314.6MB. Free memory was 290.0MB in the beginning and 288.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.02ms. Allocated memory is still 314.6MB. Free memory was 288.2MB in the beginning and 287.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 295.93ms. Allocated memory is still 314.6MB. Free memory was 287.2MB in the beginning and 276.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 82.09ms. Allocated memory is still 314.6MB. Free memory was 276.0MB in the beginning and 271.4MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 18453.54ms. Allocated memory is still 314.6MB. Free memory was 271.2MB in the beginning and 208.7MB in the end (delta: 62.4MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [A=-1, B=-1, counter=0, d=-1, p=-1, q=0, r=-1] [L34] EXPR counter++ VAL [A=-1, B=-1, counter=1, counter++=0, d=-1, p=-1, q=0, r=-1] [L34] COND TRUE counter++<1 [L35] CALL __VERIFIER_assert(q == 0) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(q == 0) [L36] CALL __VERIFIER_assert(r == A) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(r == A) [L37] CALL __VERIFIER_assert(d == B * p) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(d == B * p) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [A=-1, B=-1, counter=1, d=-2, p=-2, q=0, r=-1] [L34] EXPR counter++ VAL [A=-1, B=-1, counter=2, counter++=-1, d=-2, p=-2, q=0, r=-1] [L34] COND FALSE !(counter++<1) [L44] EXPR counter++ VAL [A=-1, B=-1, counter=3, counter++=-2, d=-2, p=-2, q=0, r=-1] [L44] COND FALSE !(counter++<1) [L58] CALL __VERIFIER_assert(A == d*q + r) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L58] RET __VERIFIER_assert(A == d*q + r) [L59] CALL __VERIFIER_assert(B == d) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L17] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 18.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 203 mSDsluCounter, 607 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24 IncrementalHoareTripleChecker+Unchecked, 394 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 213 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 93 ConstructedInterpolants, 2 QuantifiedInterpolants, 1388 SizeOfPredicates, 15 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-10 09:09:50,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...