/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_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:43:37,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:43:37,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:43:37,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:43:37,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:43:37,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:43:37,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:43:37,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:43:37,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:43:37,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:43:37,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:43:37,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:43:37,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:43:37,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:43:37,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:43:37,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:43:37,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:43:37,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:43:37,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:43:37,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:43:37,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:43:37,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:43:37,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:43:37,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:43:37,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:43:37,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:43:37,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:43:37,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:43:37,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:43:37,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:43:37,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:43:37,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:43:37,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:43:37,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:43:37,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:43:37,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:43:37,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:43:37,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:43:37,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:43:37,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:43:37,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:43:37,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:43:37,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:43:37,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:43:37,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:43:37,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:43:37,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:43:37,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:43:37,618 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:43:37,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:43:37,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:43:37,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:43:37,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:43:37,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:43:37,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:43:37,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:43:37,620 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:43:37,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:43:37,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:43:37,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:43:37,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:43:37,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:43:37,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:43:37,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:43:37,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:43:37,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:43:37,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:43:37,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:43:37,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:43:37,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:43:37,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:43:37,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:43:37,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:43:37,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:43:37,623 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:43:37,623 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:43:37,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:43:37,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:43:37,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:43:37,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:43:37,841 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:43:37,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-01-10 14:43:37,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c02ff5/ec4664f520394aa287f7bc4f011efe85/FLAG1d16a41c4 [2022-01-10 14:43:38,283 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:43:38,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-01-10 14:43:38,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c02ff5/ec4664f520394aa287f7bc4f011efe85/FLAG1d16a41c4 [2022-01-10 14:43:38,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6c02ff5/ec4664f520394aa287f7bc4f011efe85 [2022-01-10 14:43:38,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:43:38,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:43:38,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:43:38,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:43:38,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:43:38,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b81d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38, skipping insertion in model container [2022-01-10 14:43:38,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:43:38,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:43:38,531 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/dijkstra-u_valuebound2.c[525,538] [2022-01-10 14:43:38,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:43:38,585 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:43:38,599 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/dijkstra-u_valuebound2.c[525,538] [2022-01-10 14:43:38,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:43:38,643 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:43:38,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38 WrapperNode [2022-01-10 14:43:38,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:43:38,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:43:38,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:43:38,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:43:38,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,689 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 104 [2022-01-10 14:43:38,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:43:38,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:43:38,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:43:38,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:43:38,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:43:38,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:43:38,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:43:38,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:43:38,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (1/1) ... [2022-01-10 14:43:38,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:43:38,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:38,764 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 14:43:38,776 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 14:43:38,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:43:38,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:43:38,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:43:38,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:43:38,863 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:43:38,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:43:39,876 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:43:39,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:43:39,881 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:43:39,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:43:39 BoogieIcfgContainer [2022-01-10 14:43:39,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:43:39,883 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:43:39,883 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:43:39,884 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:43:39,886 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:43:39" (1/1) ... [2022-01-10 14:43:39,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:43:39 BasicIcfg [2022-01-10 14:43:39,947 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:43:39,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:43:39,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:43:39,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:43:39,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:43:38" (1/4) ... [2022-01-10 14:43:39,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a835c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:43:39, skipping insertion in model container [2022-01-10 14:43:39,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:38" (2/4) ... [2022-01-10 14:43:39,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a835c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:43:39, skipping insertion in model container [2022-01-10 14:43:39,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:43:39" (3/4) ... [2022-01-10 14:43:39,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a835c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:43:39, skipping insertion in model container [2022-01-10 14:43:39,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:43:39" (4/4) ... [2022-01-10 14:43:39,953 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.cTransformedIcfg [2022-01-10 14:43:39,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:43:39,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-01-10 14:43:39,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:43:39,993 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 14:43:39,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-01-10 14:43:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 50 states have internal predecessors, (68), 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 14:43:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:43:40,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:40,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:40,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash 499700079, now seen corresponding path program 1 times [2022-01-10 14:43:40,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:40,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195355744] [2022-01-10 14:43:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:40,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:40,185 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 14:43:40,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:40,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195355744] [2022-01-10 14:43:40,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195355744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:40,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:40,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:43:40,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174323733] [2022-01-10 14:43:40,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:40,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:43:40,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:40,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:43:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:43:40,221 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 50 states have internal predecessors, (68), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:40,234 INFO L93 Difference]: Finished difference Result 99 states and 132 transitions. [2022-01-10 14:43:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:43:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 14:43:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:40,243 INFO L225 Difference]: With dead ends: 99 [2022-01-10 14:43:40,243 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 14:43:40,246 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 14:43:40,250 INFO L933 BasicCegarLoop]: 53 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, 53 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 14:43:40,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:43:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 14:43:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-10 14:43:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 46 states have internal predecessors, (49), 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 14:43:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2022-01-10 14:43:40,280 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 10 [2022-01-10 14:43:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:40,281 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2022-01-10 14:43:40,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-01-10 14:43:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:43:40,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:40,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:40,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:43:40,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:40,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1687722824, now seen corresponding path program 1 times [2022-01-10 14:43:40,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:40,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963806540] [2022-01-10 14:43:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:40,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:40,572 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 14:43:40,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:40,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963806540] [2022-01-10 14:43:40,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963806540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:40,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:40,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:43:40,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107493335] [2022-01-10 14:43:40,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:40,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:43:40,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:43:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:40,576 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14:43:42,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:43:44,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:43:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:45,431 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2022-01-10 14:43:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:43:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-01-10 14:43:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:45,433 INFO L225 Difference]: With dead ends: 88 [2022-01-10 14:43:45,433 INFO L226 Difference]: Without dead ends: 86 [2022-01-10 14:43:45,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:43:45,435 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 63 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:45,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 115 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 14:43:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-10 14:43:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 51. [2022-01-10 14:43:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-01-10 14:43:45,447 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 11 [2022-01-10 14:43:45,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:45,447 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-01-10 14:43:45,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14:43:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-01-10 14:43:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:43:45,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:45,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:45,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:43:45,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1595966355, now seen corresponding path program 1 times [2022-01-10 14:43:45,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:45,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187323778] [2022-01-10 14:43:45,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:45,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:45,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:43:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435875013] [2022-01-10 14:43:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:45,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:45,470 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 14:43:45,483 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 14:43:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:45,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 14:43:45,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:43:45,942 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 14:43:45,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:43:45,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187323778] [2022-01-10 14:43:45,943 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:43:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435875013] [2022-01-10 14:43:45,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435875013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:45,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:45,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:43:45,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712547465] [2022-01-10 14:43:45,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:45,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:43:45,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:43:45,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:43:45,945 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:46,541 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2022-01-10 14:43:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:43:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 14:43:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:46,544 INFO L225 Difference]: With dead ends: 113 [2022-01-10 14:43:46,545 INFO L226 Difference]: Without dead ends: 70 [2022-01-10 14:43:46,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:43:46,546 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:46,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 106 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 14:43:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-10 14:43:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-01-10 14:43:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 64 states have internal predecessors, (69), 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 14:43:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-01-10 14:43:46,560 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 13 [2022-01-10 14:43:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:46,560 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-01-10 14:43:46,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-01-10 14:43:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:43:46,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:46,561 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:46,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 14:43:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:46,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1570236861, now seen corresponding path program 1 times [2022-01-10 14:43:46,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:46,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497823241] [2022-01-10 14:43:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:46,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:43:47,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:47,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497823241] [2022-01-10 14:43:47,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497823241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:43:47,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008231799] [2022-01-10 14:43:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:47,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:47,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:47,045 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 14:43:47,049 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 14:43:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:47,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 14:43:47,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:43:47,385 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 14:43:47,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:43:47,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008231799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:47,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 14:43:47,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-01-10 14:43:47,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004357465] [2022-01-10 14:43:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:47,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:43:47,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:43:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:43:47,391 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:48,001 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2022-01-10 14:43:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:43:48,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 14:43:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:48,003 INFO L225 Difference]: With dead ends: 142 [2022-01-10 14:43:48,003 INFO L226 Difference]: Without dead ends: 140 [2022-01-10 14:43:48,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:43:48,004 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 93 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:48,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 173 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 14:43:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-10 14:43:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 67. [2022-01-10 14:43:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-10 14:43:48,017 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 13 [2022-01-10 14:43:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:48,018 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-10 14:43:48,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-10 14:43:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 14:43:48,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:48,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:48,044 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 14:43:48,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 14:43:48,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash -420304494, now seen corresponding path program 1 times [2022-01-10 14:43:48,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:48,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407146397] [2022-01-10 14:43:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:48,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:48,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:43:48,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449823467] [2022-01-10 14:43:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:48,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:48,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:48,260 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 14:43:48,291 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 14:43:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:48,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:43:48,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:43:48,510 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 14:43:48,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:43:48,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:48,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407146397] [2022-01-10 14:43:48,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:43:48,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449823467] [2022-01-10 14:43:48,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449823467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:48,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:48,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:43:48,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809724770] [2022-01-10 14:43:48,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:48,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:43:48,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:43:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:43:48,512 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:49,168 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2022-01-10 14:43:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:43:49,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 14:43:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:49,169 INFO L225 Difference]: With dead ends: 71 [2022-01-10 14:43:49,169 INFO L226 Difference]: Without dead ends: 51 [2022-01-10 14:43:49,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:49,170 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:49,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 86 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 14:43:49,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-10 14:43:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-10 14:43:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 50 states have internal predecessors, (53), 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 14:43:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2022-01-10 14:43:49,178 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 15 [2022-01-10 14:43:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:49,178 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-01-10 14:43:49,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-01-10 14:43:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 14:43:49,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:49,179 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:49,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 14:43:49,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:49,386 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:49,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1464064856, now seen corresponding path program 1 times [2022-01-10 14:43:49,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:49,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379027599] [2022-01-10 14:43:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:49,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:49,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:43:49,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776554320] [2022-01-10 14:43:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:49,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:49,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:49,399 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 14:43:49,400 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 14:43:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:49,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:43:49,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:43:49,659 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 14:43:49,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:43:49,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:49,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379027599] [2022-01-10 14:43:49,660 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:43:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776554320] [2022-01-10 14:43:49,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776554320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:49,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:49,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:43:49,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942162977] [2022-01-10 14:43:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:49,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:43:49,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:43:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:49,661 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 14:43:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:50,382 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-01-10 14:43:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:43:50,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 14:43:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:50,383 INFO L225 Difference]: With dead ends: 55 [2022-01-10 14:43:50,383 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 14:43:50,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:50,384 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:50,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 124 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 23 Unchecked, 0.7s Time] [2022-01-10 14:43:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 14:43:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-01-10 14:43:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.25) internal successors, (55), 52 states have internal predecessors, (55), 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 14:43:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2022-01-10 14:43:50,391 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 15 [2022-01-10 14:43:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:50,391 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2022-01-10 14:43:50,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 14:43:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-01-10 14:43:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 14:43:50,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:50,392 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:50,417 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 14:43:50,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:50,593 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1782984461, now seen corresponding path program 1 times [2022-01-10 14:43:50,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:50,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759660592] [2022-01-10 14:43:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:50,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:50,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:43:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120034108] [2022-01-10 14:43:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:50,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:50,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:50,616 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 14:43:50,638 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 14:43:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:50,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 14:43:50,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:43:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:43:50,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:43:50,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:50,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759660592] [2022-01-10 14:43:50,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:43:50,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120034108] [2022-01-10 14:43:50,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120034108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:50,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:50,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:43:50,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266348938] [2022-01-10 14:43:50,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:50,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:43:50,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:43:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:43:50,861 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:53,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:43:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:53,377 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2022-01-10 14:43:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:43:53,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 14:43:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:53,379 INFO L225 Difference]: With dead ends: 83 [2022-01-10 14:43:53,379 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 14:43:53,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:53,380 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:53,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 87 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 14:43:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 14:43:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2022-01-10 14:43:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 66 states have internal predecessors, (72), 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 14:43:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2022-01-10 14:43:53,399 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 17 [2022-01-10 14:43:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:53,399 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2022-01-10 14:43:53,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2022-01-10 14:43:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 14:43:53,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:53,400 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:43:53,463 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 14:43:53,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:53,601 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash -243845775, now seen corresponding path program 1 times [2022-01-10 14:43:53,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:53,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423166132] [2022-01-10 14:43:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:53,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:53,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:43:53,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219119004] [2022-01-10 14:43:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:53,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:53,613 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 14:43:53,639 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 14:43:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:53,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 14:43:53,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:43:54,137 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 14:43:54,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:43:54,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:43:54,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423166132] [2022-01-10 14:43:54,138 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:43:54,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219119004] [2022-01-10 14:43:54,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219119004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:43:54,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:43:54,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:43:54,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360728056] [2022-01-10 14:43:54,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:43:54,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:43:54,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:43:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:43:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:54,139 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 14:43:56,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:43:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:43:57,180 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-01-10 14:43:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:43:57,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 14:43:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:43:57,181 INFO L225 Difference]: With dead ends: 69 [2022-01-10 14:43:57,181 INFO L226 Difference]: Without dead ends: 67 [2022-01-10 14:43:57,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:43:57,182 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:43:57,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 1 Unknown, 10 Unchecked, 3.0s Time] [2022-01-10 14:43:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-10 14:43:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-01-10 14:43:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:43:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-10 14:43:57,193 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 19 [2022-01-10 14:43:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:43:57,193 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-10 14:43:57,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 14:43:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-10 14:43:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 14:43:57,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:43:57,194 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, 1, 1] [2022-01-10 14:43:57,223 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 14:43:57,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:57,415 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:43:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:43:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1363324375, now seen corresponding path program 1 times [2022-01-10 14:43:57,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:43:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835596426] [2022-01-10 14:43:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:57,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:43:57,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:43:57,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28254900] [2022-01-10 14:43:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:43:57,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:43:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:43:57,430 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 14:43:57,432 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 14:43:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:43:57,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 14:43:57,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:44:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:44:00,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:44:00,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:44:00,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835596426] [2022-01-10 14:44:00,701 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:44:00,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28254900] [2022-01-10 14:44:00,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28254900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:44:00,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:44:00,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:44:00,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540510737] [2022-01-10 14:44:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:44:00,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:44:00,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:44:00,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:44:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:44:00,702 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:44:03,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:44:05,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:44:09,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:44:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:44:10,238 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2022-01-10 14:44:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:44:10,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 14:44:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:44:10,239 INFO L225 Difference]: With dead ends: 67 [2022-01-10 14:44:10,239 INFO L226 Difference]: Without dead ends: 65 [2022-01-10 14:44:10,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:44:10,240 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:44:10,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 53 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2022-01-10 14:44:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-10 14:44:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-01-10 14:44:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 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 14:44:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-01-10 14:44:10,250 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 23 [2022-01-10 14:44:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:44:10,250 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-01-10 14:44:10,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:44:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-01-10 14:44:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 14:44:10,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:44:10,251 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 14:44:10,274 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 14:44:10,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:44:10,474 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:44:10,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:44:10,475 INFO L85 PathProgramCache]: Analyzing trace with hash 307282199, now seen corresponding path program 1 times [2022-01-10 14:44:10,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:44:10,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563564338] [2022-01-10 14:44:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:44:10,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:44:10,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:44:10,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863949248] [2022-01-10 14:44:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:44:10,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:44:10,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:44:10,489 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 14:44:10,492 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 14:44:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:44:10,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-10 14:44:10,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:44:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:44:11,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:44:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:44:43,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:44:43,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563564338] [2022-01-10 14:44:43,230 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:44:43,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863949248] [2022-01-10 14:44:43,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863949248] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:44:43,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:44:43,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2022-01-10 14:44:43,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434824304] [2022-01-10 14:44:43,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:44:43,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 14:44:43,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:44:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 14:44:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=163, Unknown=3, NotChecked=0, Total=210 [2022-01-10 14:44:43,234 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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 14:44:48,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:44:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:44:49,102 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2022-01-10 14:44:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:44:49,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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 28 [2022-01-10 14:44:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:44:49,103 INFO L225 Difference]: With dead ends: 152 [2022-01-10 14:44:49,103 INFO L226 Difference]: Without dead ends: 95 [2022-01-10 14:44:49,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=135, Invalid=461, Unknown=4, NotChecked=0, Total=600 [2022-01-10 14:44:49,105 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 214 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:44:49,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 334 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 169 Invalid, 0 Unknown, 35 Unchecked, 2.7s Time] [2022-01-10 14:44:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-10 14:44:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2022-01-10 14:44:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 62 states have internal predecessors, (63), 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 14:44:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-01-10 14:44:49,117 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 28 [2022-01-10 14:44:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:44:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-01-10 14:44:49,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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 14:44:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-01-10 14:44:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 14:44:49,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:44:49,119 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 14:44:49,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-10 14:44:49,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 14:44:49,323 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 14:44:49,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:44:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 307311990, now seen corresponding path program 1 times [2022-01-10 14:44:49,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:44:49,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960573692] [2022-01-10 14:44:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:44:49,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:44:49,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:44:49,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005002869] [2022-01-10 14:44:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:44:49,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:44:49,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:44:49,348 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:44:49,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 14:44:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:44:49,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 14:44:49,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:44:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:44:50,069 INFO L328 TraceCheckSpWp]: Computing backward predicates...