/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/fermat2-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:02:11,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:02:11,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:02:11,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:02:11,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:02:11,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:02:11,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:02:11,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:02:11,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:02:11,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:02:11,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:02:11,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:02:11,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:02:11,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:02:11,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:02:11,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:02:11,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:02:11,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:02:11,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:02:11,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:02:11,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:02:11,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:02:11,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:02:11,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:02:11,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:02:11,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:02:11,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:02:11,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:02:11,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:02:11,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:02:11,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:02:11,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:02:11,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:02:11,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:02:11,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:02:11,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:02:11,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:02:11,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:02:11,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:02:11,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:02:11,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:02:11,961 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 09:02:11,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:02:11,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:02:11,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:02:11,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:02:11,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:02:11,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:02:11,987 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:02:11,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:02:11,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:02:11,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:02:11,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:02:11,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:02:11,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:02:11,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:02:11,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:02:11,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:02:11,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:02:11,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:02:11,991 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:02:11,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:02:12,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:02:12,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:02:12,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:02:12,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:02:12,201 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:02:12,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound100.c [2022-01-10 09:02:12,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef22aad70/9f9ee18ef89d450abbd2d417f0c78a81/FLAGb69ea53cb [2022-01-10 09:02:12,589 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:02:12,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound100.c [2022-01-10 09:02:12,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef22aad70/9f9ee18ef89d450abbd2d417f0c78a81/FLAGb69ea53cb [2022-01-10 09:02:12,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef22aad70/9f9ee18ef89d450abbd2d417f0c78a81 [2022-01-10 09:02:12,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:02:12,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:02:12,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:02:12,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:02:12,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:02:12,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3414f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12, skipping insertion in model container [2022-01-10 09:02:12,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:02:12,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:02:12,780 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/fermat2-ll_valuebound100.c[524,537] [2022-01-10 09:02:12,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:02:12,816 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:02:12,825 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/fermat2-ll_valuebound100.c[524,537] [2022-01-10 09:02:12,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:02:12,862 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:02:12,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12 WrapperNode [2022-01-10 09:02:12,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:02:12,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:02:12,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:02:12,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:02:12,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,896 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 63 [2022-01-10 09:02:12,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:02:12,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:02:12,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:02:12,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:02:12,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:02:12,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:02:12,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:02:12,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:02:12,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (1/1) ... [2022-01-10 09:02:12,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:02:12,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:02:12,954 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 09:02:12,975 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 09:02:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:02:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:02:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:02:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:02:13,030 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:02:13,031 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:02:13,475 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:02:13,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:02:13,480 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 09:02:13,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:02:13 BoogieIcfgContainer [2022-01-10 09:02:13,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:02:13,482 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:02:13,482 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:02:13,488 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:02:13,490 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:02:13" (1/1) ... [2022-01-10 09:02:13,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:02:13 BasicIcfg [2022-01-10 09:02:13,579 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:02:13,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:02:13,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:02:13,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:02:13,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:02:12" (1/4) ... [2022-01-10 09:02:13,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e72b287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:02:13, skipping insertion in model container [2022-01-10 09:02:13,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:02:12" (2/4) ... [2022-01-10 09:02:13,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e72b287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:02:13, skipping insertion in model container [2022-01-10 09:02:13,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:02:13" (3/4) ... [2022-01-10 09:02:13,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e72b287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:02:13, skipping insertion in model container [2022-01-10 09:02:13,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:02:13" (4/4) ... [2022-01-10 09:02:13,585 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound100.cTransformedIcfg [2022-01-10 09:02:13,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:02:13,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 09:02:13,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:02:13,630 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 09:02:13,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 09:02:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 24 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 09:02:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 09:02:13,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:02:13,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:02:13,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:02:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:02:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash 159726682, now seen corresponding path program 1 times [2022-01-10 09:02:13,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:02:13,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78052200] [2022-01-10 09:02:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:02:13,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:02:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:02:13,833 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 09:02:13,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:02:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78052200] [2022-01-10 09:02:13,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78052200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:02:13,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:02:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:02:13,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704560837] [2022-01-10 09:02:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:02:13,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:02:13,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:02:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:02:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:02:13,867 INFO L87 Difference]: Start difference. First operand has 25 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 24 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 09:02:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:02:13,881 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-01-10 09:02:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:02:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-01-10 09:02:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:02:13,891 INFO L225 Difference]: With dead ends: 47 [2022-01-10 09:02:13,892 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 09:02:13,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:02:13,898 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:02:13,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:02:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 09:02:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 09:02:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:02:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-01-10 09:02:13,926 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2022-01-10 09:02:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:02:13,927 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-01-10 09:02:13,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 09:02:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-01-10 09:02:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 09:02:13,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:02:13,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:02:13,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:02:13,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:02:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:02:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1738715358, now seen corresponding path program 1 times [2022-01-10 09:02:13,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:02:13,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670091649] [2022-01-10 09:02:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:02:13,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:02:13,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:02:13,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927507580] [2022-01-10 09:02:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:02:13,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:02:13,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:02:14,012 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 09:02:14,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process