/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_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:52:51,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:52:51,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:52:51,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:52:51,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:52:51,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:52:51,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:52:51,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:52:51,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:52:51,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:52:51,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:52:51,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:52:51,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:52:51,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:52:51,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:52:51,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:52:51,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:52:51,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:52:51,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:52:51,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:52:51,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:52:51,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:52:51,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:52:51,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:52:51,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:52:51,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:52:51,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:52:51,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:52:51,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:52:51,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:52:51,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:52:51,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:52:51,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:52:51,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:52:51,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:52:51,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:52:51,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:52:51,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:52:51,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:52:51,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:52:51,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:52:51,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:52:51,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:52:51,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:52:51,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:52:51,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:52:51,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:52:51,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:52:51,689 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:52:51,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:52:51,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:52:51,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:52:51,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:52:51,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:52:51,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:52:51,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:52:51,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:52:51,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:52:51,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:52:51,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:52:51,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:52:51,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:52:51,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:52:51,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:52:51,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:52:51,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:52:51,693 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:52:51,693 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:52:51,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:52:51,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:52:51,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:52:51,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:52:51,869 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:52:51,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c [2022-01-10 20:52:51,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b764170/789a1dfcbe1c481bae4dd8e49d1aba58/FLAGa4589380c [2022-01-10 20:52:52,234 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:52:52,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c [2022-01-10 20:52:52,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b764170/789a1dfcbe1c481bae4dd8e49d1aba58/FLAGa4589380c [2022-01-10 20:52:52,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b764170/789a1dfcbe1c481bae4dd8e49d1aba58 [2022-01-10 20:52:52,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:52:52,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:52:52,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:52:52,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:52:52,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:52:52,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27858769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52, skipping insertion in model container [2022-01-10 20:52:52,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:52:52,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:52:52,818 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/lcm1_valuebound20.c[552,565] [2022-01-10 20:52:52,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:52:52,833 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:52:52,841 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/lcm1_valuebound20.c[552,565] [2022-01-10 20:52:52,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:52:52,854 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:52:52,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52 WrapperNode [2022-01-10 20:52:52,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:52:52,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:52:52,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:52:52,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:52:52,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,877 INFO L137 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 109 [2022-01-10 20:52:52,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:52:52,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:52:52,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:52:52,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:52:52,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:52:52,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:52:52,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:52:52,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:52:52,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (1/1) ... [2022-01-10 20:52:52,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:52:52,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:52,918 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 20:52:52,926 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 20:52:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:52:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:52:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:52:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:52:52,988 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:52:52,989 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:52:53,282 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:52:53,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:52:53,286 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 20:52:53,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:52:53 BoogieIcfgContainer [2022-01-10 20:52:53,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:52:53,288 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:52:53,288 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:52:53,289 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:52:53,291 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:52:53" (1/1) ... [2022-01-10 20:52:53,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:52:53 BasicIcfg [2022-01-10 20:52:53,352 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:52:53,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:52:53,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:52:53,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:52:53,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:52:52" (1/4) ... [2022-01-10 20:52:53,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ead8972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:52:53, skipping insertion in model container [2022-01-10 20:52:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:52" (2/4) ... [2022-01-10 20:52:53,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ead8972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:52:53, skipping insertion in model container [2022-01-10 20:52:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:52:53" (3/4) ... [2022-01-10 20:52:53,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ead8972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:52:53, skipping insertion in model container [2022-01-10 20:52:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:52:53" (4/4) ... [2022-01-10 20:52:53,362 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound20.cTransformedIcfg [2022-01-10 20:52:53,366 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:52:53,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 20:52:53,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:52:53,400 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 20:52:53,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 20:52:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 43 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 20:52:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 20:52:53,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:53,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:53,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash -571069561, now seen corresponding path program 1 times [2022-01-10 20:52:53,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799505186] [2022-01-10 20:52:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:53,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:53,564 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 20:52:53,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:53,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799505186] [2022-01-10 20:52:53,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799505186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:53,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:53,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:52:53,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792832051] [2022-01-10 20:52:53,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:53,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:52:53,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:52:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:52:53,594 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 43 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) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:53,610 INFO L93 Difference]: Finished difference Result 85 states and 122 transitions. [2022-01-10 20:52:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:52:53,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 20:52:53,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:53,616 INFO L225 Difference]: With dead ends: 85 [2022-01-10 20:52:53,617 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 20:52:53,618 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 20:52:53,621 INFO L933 BasicCegarLoop]: 46 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, 46 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 20:52:53,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:52:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 20:52:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-10 20:52:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2022-01-10 20:52:53,647 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 17 [2022-01-10 20:52:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:53,648 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2022-01-10 20:52:53,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2022-01-10 20:52:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 20:52:53,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:53,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:53,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:52:53,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1779496372, now seen corresponding path program 1 times [2022-01-10 20:52:53,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143120983] [2022-01-10 20:52:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:53,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:53,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411898008] [2022-01-10 20:52:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:53,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:53,721 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 20:52:53,723 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 20:52:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:53,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 20:52:53,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:54,355 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 20:52:54,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:52:54,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143120983] [2022-01-10 20:52:54,356 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:54,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411898008] [2022-01-10 20:52:54,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411898008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:54,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:54,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 20:52:54,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134279958] [2022-01-10 20:52:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:54,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:52:54,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:52:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:52:54,363 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:54,646 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2022-01-10 20:52:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 20:52:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 20:52:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:54,647 INFO L225 Difference]: With dead ends: 67 [2022-01-10 20:52:54,647 INFO L226 Difference]: Without dead ends: 61 [2022-01-10 20:52:54,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2022-01-10 20:52:54,648 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:52:54,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 44 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:52:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-10 20:52:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2022-01-10 20:52:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 51 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 20:52:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-01-10 20:52:54,654 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 17 [2022-01-10 20:52:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:54,655 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-01-10 20:52:54,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-01-10 20:52:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 20:52:54,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:54,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:54,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:52:54,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:54,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1716375385, now seen corresponding path program 1 times [2022-01-10 20:52:54,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:54,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560750635] [2022-01-10 20:52:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:54,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:54,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:54,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913447095] [2022-01-10 20:52:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:54,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:54,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:54,928 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 20:52:54,932 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 20:52:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:54,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:52:54,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:55,173 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 20:52:55,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:52:55,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:55,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560750635] [2022-01-10 20:52:55,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:55,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913447095] [2022-01-10 20:52:55,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913447095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:55,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:55,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 20:52:55,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667774336] [2022-01-10 20:52:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:55,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:52:55,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:52:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:52:55,175 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:57,199 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 20:53:04,875 WARN L228 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 33 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 20:53:07,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:11,857 WARN L534 Checker$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 20:53:13,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:16,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:17,218 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2022-01-10 20:53:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:53:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 20:53:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:17,219 INFO L225 Difference]: With dead ends: 95 [2022-01-10 20:53:17,219 INFO L226 Difference]: Without dead ends: 87 [2022-01-10 20:53:17,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-10 20:53:17,220 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:17,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 128 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 12.3s Time] [2022-01-10 20:53:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-10 20:53:17,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2022-01-10 20:53:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 79 states have internal predecessors, (92), 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 20:53:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-01-10 20:53:17,228 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 21 [2022-01-10 20:53:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:17,228 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-01-10 20:53:17,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-01-10 20:53:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:53:17,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:17,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:17,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 20:53:17,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 20:53:17,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash -169265523, now seen corresponding path program 1 times [2022-01-10 20:53:17,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:17,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556714728] [2022-01-10 20:53:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:17,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:17,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:17,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543638457] [2022-01-10 20:53:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:17,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:17,469 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 20:53:17,470 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 20:53:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:17,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 20:53:17,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:17,545 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 20:53:17,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:53:17,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556714728] [2022-01-10 20:53:17,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543638457] [2022-01-10 20:53:17,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543638457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:53:17,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:53:17,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:53:17,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516593645] [2022-01-10 20:53:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:53:17,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:53:17,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:53:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:53:17,546 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:17,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:17,582 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2022-01-10 20:53:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:53:17,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 20:53:17,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:17,583 INFO L225 Difference]: With dead ends: 81 [2022-01-10 20:53:17,583 INFO L226 Difference]: Without dead ends: 75 [2022-01-10 20:53:17,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 20:53:17,584 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:17,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:53:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-10 20:53:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-01-10 20:53:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.2) internal successors, (84), 73 states have internal predecessors, (84), 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 20:53:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-01-10 20:53:17,590 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 23 [2022-01-10 20:53:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:17,590 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-01-10 20:53:17,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-01-10 20:53:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 20:53:17,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:17,591 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, 1, 1] [2022-01-10 20:53:17,609 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 20:53:17,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:17,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 816419945, now seen corresponding path program 1 times [2022-01-10 20:53:17,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:17,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194598019] [2022-01-10 20:53:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:17,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:17,824 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:17,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726584598] [2022-01-10 20:53:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:17,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:17,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:17,831 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 20:53:17,831 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 20:53:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:18,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 20:53:18,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:19,203 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 20:53:19,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:53:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:53:21,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:21,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194598019] [2022-01-10 20:53:21,363 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:21,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726584598] [2022-01-10 20:53:21,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726584598] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:53:21,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:53:21,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 15 [2022-01-10 20:53:21,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892974541] [2022-01-10 20:53:21,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:53:21,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 20:53:21,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:21,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 20:53:21,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:53:21,364 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:53:25,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:27,452 WARN L534 Checker$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 20:53:29,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:34,399 WARN L534 Checker$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 20:53:36,401 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 20:53:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:36,411 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2022-01-10 20:53:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 20:53:36,412 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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) Word has length 25 [2022-01-10 20:53:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:36,413 INFO L225 Difference]: With dead ends: 129 [2022-01-10 20:53:36,413 INFO L226 Difference]: Without dead ends: 123 [2022-01-10 20:53:36,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=237, Invalid=465, Unknown=0, NotChecked=0, Total=702 [2022-01-10 20:53:36,414 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 177 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 82 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:36,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 67 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 172 Invalid, 5 Unknown, 0 Unchecked, 11.3s Time] [2022-01-10 20:53:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-10 20:53:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 96. [2022-01-10 20:53:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 95 states have internal predecessors, (110), 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 20:53:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2022-01-10 20:53:36,424 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 25 [2022-01-10 20:53:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:36,424 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2022-01-10 20:53:36,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:53:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2022-01-10 20:53:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 20:53:36,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:36,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1] [2022-01-10 20:53:36,451 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 20:53:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:36,630 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1998703169, now seen corresponding path program 1 times [2022-01-10 20:53:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:36,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412852257] [2022-01-10 20:53:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:36,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:36,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:36,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919110791] [2022-01-10 20:53:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:36,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:36,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:36,646 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 20:53:36,647 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 20:53:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:36,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 20:53:36,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:43,657 WARN L228 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)