/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/egcd3-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:59:27,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:59:27,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:59:27,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:59:27,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:59:27,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:59:27,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:59:27,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:59:27,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:59:27,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:59:27,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:59:27,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:59:27,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:59:27,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:59:27,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:59:27,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:59:27,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:59:27,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:59:27,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:59:27,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:59:27,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:59:27,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:59:27,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:59:27,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:59:27,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:59:27,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:59:27,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:59:27,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:59:27,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:59:27,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:59:27,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:59:27,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:59:27,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:59:27,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:59:28,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:59:28,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:59:28,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:59:28,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:59:28,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:59:28,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:59:28,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:59:28,002 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 08:59:28,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:59:28,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:59:28,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:59:28,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:59:28,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:59:28,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:59:28,029 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:59:28,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:59:28,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:59:28,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:59:28,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:59:28,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:59:28,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:59:28,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:59:28,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:59:28,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:59:28,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:59:28,033 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:59:28,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:59:28,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:59:28,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:59:28,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:59:28,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:59:28,217 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:59:28,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound1.c [2022-01-10 08:59:28,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2839eebe8/a8b47ac01ab24c53bfb83e8300a579ea/FLAGd5602f964 [2022-01-10 08:59:28,590 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:59:28,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound1.c [2022-01-10 08:59:28,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2839eebe8/a8b47ac01ab24c53bfb83e8300a579ea/FLAGd5602f964 [2022-01-10 08:59:28,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2839eebe8/a8b47ac01ab24c53bfb83e8300a579ea [2022-01-10 08:59:28,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:59:28,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:59:28,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:59:28,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:59:28,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:59:28,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c805c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28, skipping insertion in model container [2022-01-10 08:59:28,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:59:28,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:59:28,787 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/egcd3-ll_valuebound1.c[490,503] [2022-01-10 08:59:28,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:59:28,834 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:59:28,843 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/egcd3-ll_valuebound1.c[490,503] [2022-01-10 08:59:28,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:59:28,872 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:59:28,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28 WrapperNode [2022-01-10 08:59:28,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:59:28,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:59:28,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:59:28,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:59:28,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,909 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 115 [2022-01-10 08:59:28,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:59:28,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:59:28,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:59:28,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:59:28,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:59:28,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:59:28,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:59:28,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:59:28,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (1/1) ... [2022-01-10 08:59:28,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:59:28,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:28,972 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 08:59:28,991 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 08:59:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:59:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:59:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:59:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:59:29,050 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:59:29,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:59:29,761 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:59:29,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:59:29,765 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 08:59:29,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:59:29 BoogieIcfgContainer [2022-01-10 08:59:29,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:59:29,767 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:59:29,767 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:59:29,768 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:59:29,769 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:59:29" (1/1) ... [2022-01-10 08:59:29,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:59:29 BasicIcfg [2022-01-10 08:59:29,828 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:59:29,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:59:29,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:59:29,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:59:29,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:59:28" (1/4) ... [2022-01-10 08:59:29,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6285c21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:59:29, skipping insertion in model container [2022-01-10 08:59:29,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:59:28" (2/4) ... [2022-01-10 08:59:29,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6285c21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:59:29, skipping insertion in model container [2022-01-10 08:59:29,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:59:29" (3/4) ... [2022-01-10 08:59:29,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6285c21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:59:29, skipping insertion in model container [2022-01-10 08:59:29,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:59:29" (4/4) ... [2022-01-10 08:59:29,834 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.cTransformedIcfg [2022-01-10 08:59:29,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:59:29,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 08:59:29,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:59:29,869 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 08:59:29,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 08:59:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 41 states have internal predecessors, (59), 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 08:59:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 08:59:29,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:29,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:29,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1761099342, now seen corresponding path program 1 times [2022-01-10 08:59:29,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:29,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346068424] [2022-01-10 08:59:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:29,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:30,035 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 08:59:30,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346068424] [2022-01-10 08:59:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346068424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:59:30,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:59:30,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:59:30,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79414228] [2022-01-10 08:59:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:59:30,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:59:30,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:59:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:59:30,066 INFO L87 Difference]: Start difference. First operand has 42 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 41 states have internal predecessors, (59), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 08:59:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:30,084 INFO L93 Difference]: Finished difference Result 81 states and 114 transitions. [2022-01-10 08:59:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:59:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-01-10 08:59:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:30,091 INFO L225 Difference]: With dead ends: 81 [2022-01-10 08:59:30,091 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 08:59:30,093 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 08:59:30,096 INFO L933 BasicCegarLoop]: 44 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, 44 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 08:59:30,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:59:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 08:59:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-10 08:59:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 37 states have internal predecessors, (40), 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 08:59:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-01-10 08:59:30,123 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 14 [2022-01-10 08:59:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:30,123 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-01-10 08:59:30,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 08:59:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-01-10 08:59:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 08:59:30,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:30,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:30,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:59:30,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1767935939, now seen corresponding path program 1 times [2022-01-10 08:59:30,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:30,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499976280] [2022-01-10 08:59:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:30,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:30,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:30,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551474631] [2022-01-10 08:59:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:30,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:30,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:30,212 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 08:59:30,253 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 08:59:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:30,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 08:59:30,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:59:40,601 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 08:59:40,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:59:40,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:40,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499976280] [2022-01-10 08:59:40,602 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:59:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551474631] [2022-01-10 08:59:40,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551474631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:59:40,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:59:40,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 08:59:40,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538122931] [2022-01-10 08:59:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:59:40,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:59:40,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:59:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:59:40,609 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 08:59:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:41,136 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-01-10 08:59:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:59:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 08:59:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:41,139 INFO L225 Difference]: With dead ends: 44 [2022-01-10 08:59:41,139 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 08:59:41,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:59:41,140 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:59:41,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 144 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-01-10 08:59:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 08:59:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-10 08:59:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2) internal successors, (42), 39 states have internal predecessors, (42), 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 08:59:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2022-01-10 08:59:41,145 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 15 [2022-01-10 08:59:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:41,145 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2022-01-10 08:59:41,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 08:59:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-01-10 08:59:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 08:59:41,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:41,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:41,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:59:41,347 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 08:59:41,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1856017956, now seen corresponding path program 1 times [2022-01-10 08:59:41,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730772557] [2022-01-10 08:59:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:41,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:41,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:41,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932521154] [2022-01-10 08:59:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:41,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:41,382 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 08:59:41,434 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 08:59:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:41,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 08:59:41,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:59:42,216 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 08:59:42,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:59:42,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:42,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730772557] [2022-01-10 08:59:42,216 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:59:42,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932521154] [2022-01-10 08:59:42,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932521154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:59:42,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:59:42,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 08:59:42,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691477014] [2022-01-10 08:59:42,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:59:42,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 08:59:42,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 08:59:42,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:59:42,218 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 08:59:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:42,743 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-01-10 08:59:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 08:59:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-01-10 08:59:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:42,745 INFO L225 Difference]: With dead ends: 73 [2022-01-10 08:59:42,745 INFO L226 Difference]: Without dead ends: 71 [2022-01-10 08:59:42,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-10 08:59:42,746 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 125 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:59:42,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 84 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:59:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-10 08:59:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2022-01-10 08:59:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.25) internal successors, (60), 52 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 08:59:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2022-01-10 08:59:42,753 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 17 [2022-01-10 08:59:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:42,753 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2022-01-10 08:59:42,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 08:59:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-01-10 08:59:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 08:59:42,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:42,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:42,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:59:42,967 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,SelfDestructingSolverStorable2 [2022-01-10 08:59:42,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1221865511, now seen corresponding path program 1 times [2022-01-10 08:59:42,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999946252] [2022-01-10 08:59:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:42,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:42,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:43,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481607277] [2022-01-10 08:59:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:43,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:43,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:43,005 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 08:59:43,006 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 08:59:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:43,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 08:59:43,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:59:43,738 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 08:59:43,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:59:43,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999946252] [2022-01-10 08:59:43,739 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:59:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481607277] [2022-01-10 08:59:43,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481607277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:59:43,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:59:43,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 08:59:43,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061451482] [2022-01-10 08:59:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:59:43,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 08:59:43,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 08:59:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:59:43,740 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 08:59:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:44,268 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-01-10 08:59:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 08:59:44,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 08:59:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:44,270 INFO L225 Difference]: With dead ends: 71 [2022-01-10 08:59:44,270 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 08:59:44,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-10 08:59:44,271 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 130 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:59:44,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 71 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:59:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 08:59:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2022-01-10 08:59:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 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 08:59:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-10 08:59:44,313 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 19 [2022-01-10 08:59:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:44,313 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-10 08:59:44,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 08:59:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-10 08:59:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 08:59:44,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:44,314 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 08:59:44,319 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 08:59:44,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:44,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1857180666, now seen corresponding path program 1 times [2022-01-10 08:59:44,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:44,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907192012] [2022-01-10 08:59:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:44,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:44,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431417221] [2022-01-10 08:59:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:44,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:44,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:44,563 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 08:59:44,573 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 08:59:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:44,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 08:59:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:59:49,972 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 08:59:49,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:59:50,300 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 08:59:50,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907192012] [2022-01-10 08:59:50,301 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:59:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431417221] [2022-01-10 08:59:50,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431417221] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:59:50,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:59:50,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-01-10 08:59:50,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90309039] [2022-01-10 08:59:50,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:59:50,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 08:59:50,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 08:59:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-10 08:59:50,302 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 08:59:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:50,721 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2022-01-10 08:59:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 08:59:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 20 [2022-01-10 08:59:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:50,722 INFO L225 Difference]: With dead ends: 62 [2022-01-10 08:59:50,722 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 08:59:50,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-10 08:59:50,723 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:59:50,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 231 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-01-10 08:59:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 08:59:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-10 08:59:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 57 states have internal predecessors, (65), 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 08:59:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-01-10 08:59:50,736 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 20 [2022-01-10 08:59:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:50,737 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-01-10 08:59:50,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 08:59:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-01-10 08:59:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 08:59:50,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:50,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:50,756 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 08:59:50,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:50,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1686722058, now seen corresponding path program 1 times [2022-01-10 08:59:50,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:50,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142299725] [2022-01-10 08:59:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:50,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:50,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:50,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522378075] [2022-01-10 08:59:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:50,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:50,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:50,958 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 08:59:50,959 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 08:59:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:51,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 08:59:51,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:59:54,242 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 08:59:54,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:59:54,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142299725] [2022-01-10 08:59:54,243 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:59:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522378075] [2022-01-10 08:59:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522378075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:59:54,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:59:54,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:59:54,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359090108] [2022-01-10 08:59:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:59:54,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:59:54,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:59:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:59:54,244 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 08:59:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:54,366 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2022-01-10 08:59:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:59:54,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-01-10 08:59:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:54,367 INFO L225 Difference]: With dead ends: 80 [2022-01-10 08:59:54,368 INFO L226 Difference]: Without dead ends: 78 [2022-01-10 08:59:54,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:59:54,368 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 29 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:59:54,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 118 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-01-10 08:59:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-10 08:59:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2022-01-10 08:59:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 63 states have internal predecessors, (71), 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 08:59:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2022-01-10 08:59:54,397 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 21 [2022-01-10 08:59:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:54,397 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2022-01-10 08:59:54,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 08:59:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-01-10 08:59:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 08:59:54,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:54,398 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:54,417 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 08:59:54,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:54,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:54,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:54,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1991181229, now seen corresponding path program 1 times [2022-01-10 08:59:54,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:54,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451635134] [2022-01-10 08:59:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:54,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:54,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:54,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928394394] [2022-01-10 08:59:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:54,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:54,615 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 08:59:54,617 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 08:59:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:54,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 08:59:54,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:59:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:59:57,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:59:57,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:59:57,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451635134] [2022-01-10 08:59:57,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:59:57,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928394394] [2022-01-10 08:59:57,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928394394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:59:57,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:59:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 08:59:57,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023027157] [2022-01-10 08:59:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:59:57,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 08:59:57,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:59:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 08:59:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:59:57,395 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 08:59:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:59:57,792 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2022-01-10 08:59:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:59:57,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) Word has length 22 [2022-01-10 08:59:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:59:57,793 INFO L225 Difference]: With dead ends: 92 [2022-01-10 08:59:57,793 INFO L226 Difference]: Without dead ends: 61 [2022-01-10 08:59:57,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 08:59:57,794 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:59:57,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 204 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-01-10 08:59:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-10 08:59:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-01-10 08:59:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 60 states have internal predecessors, (67), 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 08:59:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-01-10 08:59:57,801 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 22 [2022-01-10 08:59:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:59:57,802 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-01-10 08:59:57,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 08:59:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-01-10 08:59:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 08:59:57,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:59:57,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:59:57,808 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 08:59:58,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:58,008 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 08:59:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:59:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1737265101, now seen corresponding path program 1 times [2022-01-10 08:59:58,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:59:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848142934] [2022-01-10 08:59:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:58,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:59:58,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:59:58,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322527281] [2022-01-10 08:59:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:59:58,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:59:58,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:59:58,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:59:58,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 08:59:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:59:58,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 08:59:58,140 INFO L286 TraceCheckSpWp]: Computing forward predicates...