/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/hard-u_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:59:09,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:59:09,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:59:09,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:59:09,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:59:09,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:59:09,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:59:09,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:59:09,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:59:09,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:59:09,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:59:09,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:59:09,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:59:09,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:59:09,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:59:09,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:59:09,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:59:09,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:59:09,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:59:09,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:59:09,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:59:09,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:59:09,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:59:09,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:59:09,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:59:09,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:59:09,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:59:09,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:59:09,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:59:09,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:59:09,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:59:09,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:59:09,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:59:09,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:59:09,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:59:09,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:59:09,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:59:09,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:59:09,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:59:09,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:59:09,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:59:09,578 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 14:59:09,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:59:09,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:59:09,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:59:09,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:59:09,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:59:09,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:59:09,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:59:09,595 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:59:09,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:59:09,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:59:09,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:59:09,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:59:09,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:59:09,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:59:09,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:59:09,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:59:09,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:59:09,597 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:59:09,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:59:09,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:59:09,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:59:09,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:59:09,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:59:09,757 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:59:09,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c [2022-01-10 14:59:09,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22997dc7/3b3b064270ee4aa19802e84ca7aea65c/FLAGe60cd86a0 [2022-01-10 14:59:10,149 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:59:10,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c [2022-01-10 14:59:10,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22997dc7/3b3b064270ee4aa19802e84ca7aea65c/FLAGe60cd86a0 [2022-01-10 14:59:10,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22997dc7/3b3b064270ee4aa19802e84ca7aea65c [2022-01-10 14:59:10,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:59:10,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:59:10,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:59:10,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:59:10,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:59:10,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366e913b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10, skipping insertion in model container [2022-01-10 14:59:10,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:59:10,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:59:10,282 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/hard-u_valuebound10.c[537,550] [2022-01-10 14:59:10,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:59:10,307 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:59:10,325 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/hard-u_valuebound10.c[537,550] [2022-01-10 14:59:10,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:59:10,338 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:59:10,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10 WrapperNode [2022-01-10 14:59:10,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:59:10,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:59:10,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:59:10,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:59:10,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,372 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 99 [2022-01-10 14:59:10,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:59:10,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:59:10,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:59:10,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:59:10,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:59:10,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:59:10,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:59:10,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:59:10,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:59:10,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:59:10,414 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 14:59:10,418 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 14:59:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:59:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:59:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:59:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:59:10,482 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:59:10,483 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:59:10,616 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:59:10,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:59:10,621 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:59:10,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:10 BoogieIcfgContainer [2022-01-10 14:59:10,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:59:10,622 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:59:10,622 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:59:10,623 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:59:10,625 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:10" (1/1) ... [2022-01-10 14:59:10,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:59:10 BasicIcfg [2022-01-10 14:59:10,680 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:59:10,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:59:10,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:59:10,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:59:10,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:59:10" (1/4) ... [2022-01-10 14:59:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1e2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:59:10, skipping insertion in model container [2022-01-10 14:59:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:10" (2/4) ... [2022-01-10 14:59:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1e2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:59:10, skipping insertion in model container [2022-01-10 14:59:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:10" (3/4) ... [2022-01-10 14:59:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1e2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:59:10, skipping insertion in model container [2022-01-10 14:59:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:59:10" (4/4) ... [2022-01-10 14:59:10,701 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound10.cTransformedIcfg [2022-01-10 14:59:10,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:59:10,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-10 14:59:10,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:59:10,742 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 14:59:10,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-10 14:59:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 44 states have internal predecessors, (61), 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 14:59:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:59:10,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:10,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:10,755 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:10,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:10,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1753801254, now seen corresponding path program 1 times [2022-01-10 14:59:10,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:10,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63615647] [2022-01-10 14:59:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:10,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:10,922 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 14:59:10,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63615647] [2022-01-10 14:59:10,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63615647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:59:10,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:59:10,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:59:10,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878974113] [2022-01-10 14:59:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:59:10,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:59:10,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:59:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:59:10,962 INFO L87 Difference]: Start difference. First operand has 45 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 44 states have internal predecessors, (61), 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 5.5) internal successors, (11), 2 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 14:59:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:10,987 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2022-01-10 14:59:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:59:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 14:59:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:10,996 INFO L225 Difference]: With dead ends: 87 [2022-01-10 14:59:10,996 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 14:59:10,999 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 14:59:11,003 INFO L933 BasicCegarLoop]: 47 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, 47 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 14:59:11,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:59:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 14:59:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-10 14:59:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 40 states have internal predecessors, (43), 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 14:59:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-01-10 14:59:11,039 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 11 [2022-01-10 14:59:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:11,039 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-01-10 14:59:11,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 14:59:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-01-10 14:59:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:59:11,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:11,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:11,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:59:11,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1622138781, now seen corresponding path program 1 times [2022-01-10 14:59:11,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:11,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117865277] [2022-01-10 14:59:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:11,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:11,127 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 14:59:11,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:11,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117865277] [2022-01-10 14:59:11,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117865277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:59:11,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:59:11,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:59:11,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467370838] [2022-01-10 14:59:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:59:11,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:59:11,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:59:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:59:11,130 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 14:59:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:11,204 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2022-01-10 14:59:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:59:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 14:59:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:11,206 INFO L225 Difference]: With dead ends: 61 [2022-01-10 14:59:11,207 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 14:59:11,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:59:11,208 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:59:11,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 73 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:59:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 14:59:11,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2022-01-10 14:59:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-01-10 14:59:11,213 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2022-01-10 14:59:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:11,213 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-01-10 14:59:11,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 14:59:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-01-10 14:59:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:59:11,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:11,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:11,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:59:11,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash -197722619, now seen corresponding path program 1 times [2022-01-10 14:59:11,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:11,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476123729] [2022-01-10 14:59:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:11,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:11,293 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 14:59:11,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:11,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476123729] [2022-01-10 14:59:11,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476123729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:59:11,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:59:11,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:59:11,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425104197] [2022-01-10 14:59:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:59:11,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:59:11,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:59:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:59:11,295 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 14:59:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:11,372 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2022-01-10 14:59:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:59:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 14:59:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:11,374 INFO L225 Difference]: With dead ends: 59 [2022-01-10 14:59:11,374 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 14:59:11,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:59:11,375 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:59:11,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 67 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:59:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 14:59:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 37. [2022-01-10 14:59:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-01-10 14:59:11,380 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2022-01-10 14:59:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:11,380 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-01-10 14:59:11,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 14:59:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-01-10 14:59:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 14:59:11,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:11,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:11,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:59:11,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1032838067, now seen corresponding path program 1 times [2022-01-10 14:59:11,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904720784] [2022-01-10 14:59:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:11,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:11,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:59:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805575396] [2022-01-10 14:59:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:11,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:59:11,415 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 14:59:11,416 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 14:59:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:11,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 14:59:11,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:59:11,878 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 14:59:11,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:59:11,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904720784] [2022-01-10 14:59:11,881 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:59:11,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805575396] [2022-01-10 14:59:11,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805575396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:59:11,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:59:11,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:59:11,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098946507] [2022-01-10 14:59:11,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:59:11,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:59:11,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:11,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:59:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:59:11,884 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 14:59:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:12,101 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-01-10 14:59:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:59:12,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 14:59:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:12,102 INFO L225 Difference]: With dead ends: 80 [2022-01-10 14:59:12,102 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 14:59:12,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:59:12,103 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 182 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:59:12,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 60 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:59:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 14:59:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-01-10 14:59:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.1875) internal successors, (57), 52 states have internal predecessors, (57), 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 14:59:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-01-10 14:59:12,110 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 15 [2022-01-10 14:59:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:12,111 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-01-10 14:59:12,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 14:59:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-01-10 14:59:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 14:59:12,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:12,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:12,131 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 14:59:12,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:12,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 204111243, now seen corresponding path program 1 times [2022-01-10 14:59:12,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:12,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650528643] [2022-01-10 14:59:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:12,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:59:12,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694172650] [2022-01-10 14:59:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:12,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:59:12,354 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 14:59:12,355 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 14:59:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:12,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 14:59:12,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:59:12,708 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 14:59:12,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:59:12,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650528643] [2022-01-10 14:59:12,709 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:59:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694172650] [2022-01-10 14:59:12,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694172650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:59:12,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:59:12,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:59:12,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919184343] [2022-01-10 14:59:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:59:12,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:59:12,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:59:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:59:12,713 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:12,991 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2022-01-10 14:59:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:59:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 14:59:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:12,992 INFO L225 Difference]: With dead ends: 57 [2022-01-10 14:59:12,992 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 14:59:12,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-01-10 14:59:12,993 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 132 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:59:12,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 73 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:59:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 14:59:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-10 14:59:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.175) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2022-01-10 14:59:12,998 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 19 [2022-01-10 14:59:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:12,998 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2022-01-10 14:59:12,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2022-01-10 14:59:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 14:59:12,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:12,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:13,019 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 14:59:13,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:13,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1774741771, now seen corresponding path program 1 times [2022-01-10 14:59:13,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322789302] [2022-01-10 14:59:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:13,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:13,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:59:13,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144370235] [2022-01-10 14:59:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:13,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:59:13,236 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 14:59:13,237 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 14:59:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:13,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 14:59:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:59:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:59:13,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:59:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:59:13,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322789302] [2022-01-10 14:59:13,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:59:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144370235] [2022-01-10 14:59:13,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144370235] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:59:13,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:59:13,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2022-01-10 14:59:13,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612746936] [2022-01-10 14:59:13,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:59:13,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 14:59:13,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 14:59:13,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:59:13,692 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:16,060 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 14:59:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:16,594 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2022-01-10 14:59:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:59:16,595 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 14:59:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:16,595 INFO L225 Difference]: With dead ends: 103 [2022-01-10 14:59:16,595 INFO L226 Difference]: Without dead ends: 80 [2022-01-10 14:59:16,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2022-01-10 14:59:16,596 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 300 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:59:16,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 91 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 14:59:16,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-10 14:59:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2022-01-10 14:59:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 71 states have internal predecessors, (80), 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 14:59:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-01-10 14:59:16,603 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 23 [2022-01-10 14:59:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:16,604 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-01-10 14:59:16,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:59:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-01-10 14:59:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 14:59:16,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:16,604 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:16,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 14:59:16,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:16,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash -198681549, now seen corresponding path program 1 times [2022-01-10 14:59:16,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:16,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633724056] [2022-01-10 14:59:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:16,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:16,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:59:16,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913965757] [2022-01-10 14:59:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:16,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:16,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:59:16,843 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 14:59:16,844 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 14:59:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:16,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 14:59:16,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:59:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:59:17,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:59:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:59:19,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:59:19,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633724056] [2022-01-10 14:59:19,110 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:59:19,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913965757] [2022-01-10 14:59:19,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913965757] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 14:59:19,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 14:59:19,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 19 [2022-01-10 14:59:19,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058514621] [2022-01-10 14:59:19,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:59:19,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 14:59:19,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:59:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 14:59:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-01-10 14:59:19,112 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 14:59:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:59:19,775 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-01-10 14:59:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 14:59:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 27 [2022-01-10 14:59:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:59:19,777 INFO L225 Difference]: With dead ends: 100 [2022-01-10 14:59:19,777 INFO L226 Difference]: Without dead ends: 98 [2022-01-10 14:59:19,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2022-01-10 14:59:19,778 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 38 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:59:19,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-01-10 14:59:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-10 14:59:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2022-01-10 14:59:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 71 states have internal predecessors, (78), 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 14:59:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-01-10 14:59:19,795 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 27 [2022-01-10 14:59:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:59:19,796 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-01-10 14:59:19,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 14:59:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-01-10 14:59:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 14:59:19,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:59:19,796 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:59:19,802 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 14:59:20,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:20,000 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:59:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:59:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash 245684806, now seen corresponding path program 1 times [2022-01-10 14:59:20,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:59:20,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985511292] [2022-01-10 14:59:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:20,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:59:20,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:59:20,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754848302] [2022-01-10 14:59:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:59:20,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:59:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:59:20,021 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 14:59:20,022 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 14:59:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:59:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 14:59:20,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:59:42,093 WARN L228 SmtUtils]: Spent 14.92s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 15:00:21,380 WARN L228 SmtUtils]: Spent 24.20s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)