/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/egcd2-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:58:10,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:58:10,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:58:10,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:58:10,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:58:10,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:58:10,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:58:10,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:58:10,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:58:10,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:58:10,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:58:10,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:58:10,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:58:10,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:58:10,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:58:10,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:58:10,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:58:10,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:58:10,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:58:10,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:58:10,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:58:10,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:58:10,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:58:10,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:58:10,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:58:10,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:58:10,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:58:10,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:58:10,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:58:10,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:58:10,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:58:10,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:58:10,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:58:10,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:58:10,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:58:10,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:58:10,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:58:10,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:58:10,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:58:10,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:58:10,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:58:10,589 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 08:58:10,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:58:10,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:58:10,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:58:10,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:58:10,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:58:10,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:58:10,614 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:58:10,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:58:10,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:58:10,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:58:10,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:58:10,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:58:10,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:58:10,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:58:10,615 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:58:10,616 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:58:10,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:58:10,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:58:10,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:58:10,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:58:10,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:58:10,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:58:10,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:58:10,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:58:10,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:58:10,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:58:10,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:58:10,617 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:58:10,618 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:58:10,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:58:10,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:58:10,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:58:10,619 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:58:10,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:58:10,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:58:10,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:58:10,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:58:10,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:58:10,790 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:58:10,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2022-01-10 08:58:10,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7a92fdc/aae59b8052864f6e95bb423392bd16bb/FLAGa54390d8b [2022-01-10 08:58:11,137 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:58:11,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2022-01-10 08:58:11,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7a92fdc/aae59b8052864f6e95bb423392bd16bb/FLAGa54390d8b [2022-01-10 08:58:11,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7a92fdc/aae59b8052864f6e95bb423392bd16bb [2022-01-10 08:58:11,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:58:11,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:58:11,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:58:11,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:58:11,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:58:11,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec433ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11, skipping insertion in model container [2022-01-10 08:58:11,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:58:11,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:58:11,725 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/egcd2-ll_unwindbound50.c[490,503] [2022-01-10 08:58:11,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:58:11,747 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:58:11,755 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/egcd2-ll_unwindbound50.c[490,503] [2022-01-10 08:58:11,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:58:11,771 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:58:11,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11 WrapperNode [2022-01-10 08:58:11,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:58:11,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:58:11,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:58:11,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:58:11,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,797 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 124 [2022-01-10 08:58:11,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:58:11,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:58:11,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:58:11,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:58:11,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:58:11,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:58:11,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:58:11,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:58:11,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (1/1) ... [2022-01-10 08:58:11,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:58:11,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:11,855 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 08:58:11,857 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 08:58:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:58:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:58:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:58:11,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:58:11,925 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:58:11,926 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:58:13,602 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:58:13,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:58:13,607 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:58:13,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:58:13 BoogieIcfgContainer [2022-01-10 08:58:13,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:58:13,609 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:58:13,609 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:58:13,617 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:58:13,619 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:58:13" (1/1) ... [2022-01-10 08:58:13,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:58:13 BasicIcfg [2022-01-10 08:58:13,780 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:58:13,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:58:13,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:58:13,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:58:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:58:11" (1/4) ... [2022-01-10 08:58:13,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c5ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:58:13, skipping insertion in model container [2022-01-10 08:58:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:58:11" (2/4) ... [2022-01-10 08:58:13,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c5ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:58:13, skipping insertion in model container [2022-01-10 08:58:13,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:58:13" (3/4) ... [2022-01-10 08:58:13,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c5ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:58:13, skipping insertion in model container [2022-01-10 08:58:13,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:58:13" (4/4) ... [2022-01-10 08:58:13,786 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound50.cTransformedIcfg [2022-01-10 08:58:13,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:58:13,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 08:58:13,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:58:13,828 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 08:58:13,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 08:58:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 44 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 08:58:13,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 08:58:13,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:13,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:58:13,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1493044593, now seen corresponding path program 1 times [2022-01-10 08:58:13,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:13,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506296749] [2022-01-10 08:58:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:13,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:13,984 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 08:58:13,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:13,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506296749] [2022-01-10 08:58:13,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506296749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:13,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:13,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:58:13,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289361815] [2022-01-10 08:58:13,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:13,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:58:13,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:14,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:58:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:58:14,019 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 44 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) 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 08:58:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:14,039 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2022-01-10 08:58:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:58:14,042 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 08:58:14,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:14,049 INFO L225 Difference]: With dead ends: 87 [2022-01-10 08:58:14,049 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 08:58:14,052 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 08:58:14,055 INFO L933 BasicCegarLoop]: 48 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, 48 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 08:58:14,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:58:14,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 08:58:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-10 08:58:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 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 08:58:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-01-10 08:58:14,091 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2022-01-10 08:58:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:14,091 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-01-10 08:58:14,092 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 08:58:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-01-10 08:58:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 08:58:14,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:14,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:58:14,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:58:14,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash -252145450, now seen corresponding path program 1 times [2022-01-10 08:58:14,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:14,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355652771] [2022-01-10 08:58:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:14,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:14,142 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:14,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728919141] [2022-01-10 08:58:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:14,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:14,183 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 08:58:14,221 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 08:58:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:14,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:58:14,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:14,522 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 08:58:14,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:14,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:14,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355652771] [2022-01-10 08:58:14,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:14,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728919141] [2022-01-10 08:58:14,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728919141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:14,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:14,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:58:14,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149321878] [2022-01-10 08:58:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:14,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:58:14,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:58:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:58:14,527 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 08:58:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:14,555 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-01-10 08:58:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:58:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 08:58:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:14,556 INFO L225 Difference]: With dead ends: 51 [2022-01-10 08:58:14,556 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 08:58:14,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:58:14,557 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:14,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:58:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 08:58:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-10 08:58:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 42 states have internal predecessors, (46), 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 08:58:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-01-10 08:58:14,562 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2022-01-10 08:58:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:14,563 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-01-10 08:58:14,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 08:58:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-01-10 08:58:14,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 08:58:14,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:14,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:58:14,584 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 08:58:14,784 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 08:58:14,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:14,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash 774495272, now seen corresponding path program 1 times [2022-01-10 08:58:14,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:14,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649504568] [2022-01-10 08:58:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:14,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:14,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:14,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968507495] [2022-01-10 08:58:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:14,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:14,820 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 08:58:14,874 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 08:58:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:14,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:58:14,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:15,536 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 08:58:15,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:15,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:15,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649504568] [2022-01-10 08:58:15,538 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:15,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968507495] [2022-01-10 08:58:15,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968507495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:15,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:15,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:58:15,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828691683] [2022-01-10 08:58:15,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:15,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:58:15,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:15,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:58:15,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:58:15,540 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:58:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:15,791 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2022-01-10 08:58:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:58:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 08:58:15,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:15,794 INFO L225 Difference]: With dead ends: 52 [2022-01-10 08:58:15,794 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 08:58:15,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:58:15,795 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:15,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 132 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-01-10 08:58:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 08:58:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-10 08:58:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.236842105263158) internal successors, (47), 43 states have internal predecessors, (47), 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 08:58:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-01-10 08:58:15,799 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2022-01-10 08:58:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:15,800 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-01-10 08:58:15,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:58:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-01-10 08:58:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 08:58:15,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:15,800 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 08:58:15,835 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 08:58:16,001 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 08:58:16,001 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1759186049, now seen corresponding path program 1 times [2022-01-10 08:58:16,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:16,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412054955] [2022-01-10 08:58:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:16,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:16,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336634666] [2022-01-10 08:58:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:16,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:16,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:16,033 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 08:58:16,034 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 08:58:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:16,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 08:58:16,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:20,497 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 08:58:20,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:20,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412054955] [2022-01-10 08:58:20,498 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336634666] [2022-01-10 08:58:20,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336634666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:20,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:20,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:58:20,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371167099] [2022-01-10 08:58:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:20,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:58:20,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:58:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:58:20,499 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 08:58:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:21,009 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2022-01-10 08:58:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:58:21,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 08:58:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:21,012 INFO L225 Difference]: With dead ends: 53 [2022-01-10 08:58:21,012 INFO L226 Difference]: Without dead ends: 51 [2022-01-10 08:58:21,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:58:21,012 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:21,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 132 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 22 Unchecked, 0.4s Time] [2022-01-10 08:58:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-10 08:58:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2022-01-10 08:58:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:58:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-10 08:58:21,017 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 17 [2022-01-10 08:58:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:21,017 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-10 08:58:21,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 08:58:21,017 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-10 08:58:21,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 08:58:21,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:21,018 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 08:58:21,036 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 08:58:21,218 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 08:58:21,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1639359042, now seen corresponding path program 1 times [2022-01-10 08:58:21,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781970749] [2022-01-10 08:58:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:21,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:21,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:21,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768886661] [2022-01-10 08:58:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:21,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:21,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:21,247 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 08:58:21,248 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 08:58:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:21,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 08:58:21,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:21,937 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 08:58:21,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:21,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781970749] [2022-01-10 08:58:21,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768886661] [2022-01-10 08:58:21,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768886661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:21,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:21,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:58:21,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382844652] [2022-01-10 08:58:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:21,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:58:21,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:58:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:58:21,938 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 08:58:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:22,500 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-01-10 08:58:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:58:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 08:58:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:22,501 INFO L225 Difference]: With dead ends: 75 [2022-01-10 08:58:22,501 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 08:58:22,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:58:22,502 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 133 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:22,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 92 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:58:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 08:58:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2022-01-10 08:58:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 57 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 08:58:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-01-10 08:58:22,511 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 19 [2022-01-10 08:58:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:22,511 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-01-10 08:58:22,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 08:58:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-01-10 08:58:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 08:58:22,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:22,512 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:58:22,521 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 08:58:22,721 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 08:58:22,721 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1941674961, now seen corresponding path program 1 times [2022-01-10 08:58:22,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755355318] [2022-01-10 08:58:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:22,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:22,732 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:22,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196967037] [2022-01-10 08:58:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:22,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:22,733 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 08:58:22,735 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 08:58:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:22,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 08:58:22,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:58:23,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:23,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755355318] [2022-01-10 08:58:23,236 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196967037] [2022-01-10 08:58:23,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196967037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:23,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:23,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:58:23,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512308310] [2022-01-10 08:58:23,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:23,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:58:23,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:58:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:58:23,237 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 08:58:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:23,294 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2022-01-10 08:58:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:58:23,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 08:58:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:23,296 INFO L225 Difference]: With dead ends: 89 [2022-01-10 08:58:23,296 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 08:58:23,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:58:23,298 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:23,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:58:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 08:58:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-10 08:58:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 57 states have internal predecessors, (66), 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 08:58:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-01-10 08:58:23,315 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2022-01-10 08:58:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:23,315 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-01-10 08:58:23,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 08:58:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-01-10 08:58:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 08:58:23,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:23,315 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 08:58:23,349 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 08:58:23,516 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 08:58:23,516 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash -828920603, now seen corresponding path program 1 times [2022-01-10 08:58:23,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:23,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432791897] [2022-01-10 08:58:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:23,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:23,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:23,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442323741] [2022-01-10 08:58:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:23,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:23,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:23,543 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 08:58:23,544 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 08:58:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:23,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 08:58:23,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:24,380 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 08:58:24,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:24,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:24,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432791897] [2022-01-10 08:58:24,381 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:24,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442323741] [2022-01-10 08:58:24,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442323741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:24,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:24,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:58:24,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394686464] [2022-01-10 08:58:24,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:24,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:58:24,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:58:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:58:24,382 INFO L87 Difference]: Start difference. First operand 58 states and 66 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 08:58:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:24,821 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-01-10 08:58:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:58:24,822 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 08:58:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:24,822 INFO L225 Difference]: With dead ends: 65 [2022-01-10 08:58:24,822 INFO L226 Difference]: Without dead ends: 63 [2022-01-10 08:58:24,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:58:24,823 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 127 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:24,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 74 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:58:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-10 08:58:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2022-01-10 08:58:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.25) 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 08:58:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-01-10 08:58:24,857 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 21 [2022-01-10 08:58:24,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:24,857 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-01-10 08:58:24,858 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 08:58:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-01-10 08:58:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 08:58:24,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:24,858 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 08:58:24,877 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 08:58:25,063 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 08:58:25,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2023711896, now seen corresponding path program 1 times [2022-01-10 08:58:25,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:25,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045190850] [2022-01-10 08:58:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:25,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:25,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822065107] [2022-01-10 08:58:25,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:25,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:25,082 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 08:58:25,083 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 08:58:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:25,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 08:58:25,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:58:26,239 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 08:58:26,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:58:26,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:58:26,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045190850] [2022-01-10 08:58:26,240 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:58:26,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822065107] [2022-01-10 08:58:26,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822065107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:58:26,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:58:26,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 08:58:26,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139259958] [2022-01-10 08:58:26,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:58:26,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:58:26,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:58:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:58:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:58:26,241 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 08:58:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:58:26,919 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-01-10 08:58:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 08:58:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2022-01-10 08:58:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:58:26,920 INFO L225 Difference]: With dead ends: 63 [2022-01-10 08:58:26,920 INFO L226 Difference]: Without dead ends: 61 [2022-01-10 08:58:26,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-10 08:58:26,921 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:58:26,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 74 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:58:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-10 08:58:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-01-10 08:58:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 57 states have internal predecessors, (64), 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 08:58:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2022-01-10 08:58:26,940 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 23 [2022-01-10 08:58:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:58:26,940 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2022-01-10 08:58:26,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 08:58:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2022-01-10 08:58:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 08:58:26,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:58:26,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:58:26,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 08:58:27,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:27,149 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 08:58:27,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:58:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2001347196, now seen corresponding path program 1 times [2022-01-10 08:58:27,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:58:27,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020810282] [2022-01-10 08:58:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:27,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:58:27,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:58:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854938481] [2022-01-10 08:58:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:58:27,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:58:27,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:58:27,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:58:27,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 08:58:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:58:27,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 08:58:27,765 INFO L286 TraceCheckSpWp]: Computing forward predicates...