/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:52:22,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:52:22,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:52:22,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:52:22,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:52:22,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:52:22,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:52:22,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:52:22,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:52:22,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:52:22,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:52:22,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:52:22,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:52:22,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:52:22,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:52:22,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:52:22,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:52:22,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:52:22,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:52:22,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:52:22,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:52:22,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:52:22,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:52:22,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:52:22,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:52:22,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:52:22,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:52:22,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:52:22,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:52:22,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:52:22,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:52:22,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:52:22,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:52:22,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:52:22,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:52:22,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:52:22,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:52:22,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:52:22,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:52:22,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:52:22,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:52:22,882 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 18:52:22,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:52:22,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:52:22,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:52:22,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:52:22,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:52:22,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:52:22,908 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:52:22,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:52:22,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:52:22,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:52:22,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:52:22,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:52:22,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:52:22,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:52:22,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:22,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:52:22,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:52:22,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:52:22,911 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:52:22,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:52:22,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:52:22,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:52:22,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:52:22,912 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:52:22,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:52:23,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:52:23,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:52:23,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:52:23,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:52:23,144 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:52:23,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 18:52:23,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05320f7c3/5c0ebc55cb034434a7f75969f07789f7/FLAG130cee371 [2022-01-10 18:52:23,660 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:52:23,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 18:52:23,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05320f7c3/5c0ebc55cb034434a7f75969f07789f7/FLAG130cee371 [2022-01-10 18:52:23,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05320f7c3/5c0ebc55cb034434a7f75969f07789f7 [2022-01-10 18:52:23,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:52:23,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:52:23,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:23,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:52:23,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:52:23,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:23" (1/1) ... [2022-01-10 18:52:23,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255de763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:23, skipping insertion in model container [2022-01-10 18:52:23,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:23" (1/1) ... [2022-01-10 18:52:23,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:52:23,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:52:23,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2022-01-10 18:52:23,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2022-01-10 18:52:23,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2022-01-10 18:52:23,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2022-01-10 18:52:24,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:24,080 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:52:24,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2022-01-10 18:52:24,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2022-01-10 18:52:24,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2022-01-10 18:52:24,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2022-01-10 18:52:24,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:24,205 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:52:24,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24 WrapperNode [2022-01-10 18:52:24,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:24,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:24,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:52:24,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:52:24,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,301 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2368 [2022-01-10 18:52:24,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:24,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:52:24,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:52:24,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:52:24,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:52:24,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:52:24,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:52:24,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:52:24,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (1/1) ... [2022-01-10 18:52:24,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:24,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:52:24,416 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 18:52:24,434 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 18:52:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:52:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:52:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:52:24,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:52:24,622 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:52:24,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:52:25,671 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:52:25,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:52:25,679 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:52:25,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:25 BoogieIcfgContainer [2022-01-10 18:52:25,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:52:25,682 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:52:25,682 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:52:25,685 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:52:25,687 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:25" (1/1) ... [2022-01-10 18:52:26,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:26 BasicIcfg [2022-01-10 18:52:26,458 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:52:26,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:52:26,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:52:26,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:52:26,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:23" (1/4) ... [2022-01-10 18:52:26,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc3891c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:26, skipping insertion in model container [2022-01-10 18:52:26,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:24" (2/4) ... [2022-01-10 18:52:26,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc3891c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:26, skipping insertion in model container [2022-01-10 18:52:26,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:25" (3/4) ... [2022-01-10 18:52:26,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc3891c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:52:26, skipping insertion in model container [2022-01-10 18:52:26,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:26" (4/4) ... [2022-01-10 18:52:26,465 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-10 18:52:26,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:52:26,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 18:52:26,512 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:52:26,517 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 18:52:26,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 18:52:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 436 states have (on average 1.8577981651376148) internal successors, (810), 440 states have internal predecessors, (810), 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 18:52:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:52:26,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:26,541 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, 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, 1] [2022-01-10 18:52:26,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash 556668340, now seen corresponding path program 1 times [2022-01-10 18:52:26,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:26,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128462545] [2022-01-10 18:52:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:26,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:26,963 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 18:52:26,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:26,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128462545] [2022-01-10 18:52:26,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128462545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:26,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:26,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:26,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686508808] [2022-01-10 18:52:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:26,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:26,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:26,997 INFO L87 Difference]: Start difference. First operand has 441 states, 436 states have (on average 1.8577981651376148) internal successors, (810), 440 states have internal predecessors, (810), 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 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:27,117 INFO L93 Difference]: Finished difference Result 694 states and 1222 transitions. [2022-01-10 18:52:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 18:52:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:27,136 INFO L225 Difference]: With dead ends: 694 [2022-01-10 18:52:27,136 INFO L226 Difference]: Without dead ends: 540 [2022-01-10 18:52:27,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:27,147 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 319 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:27,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1436 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:52:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-10 18:52:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 534. [2022-01-10 18:52:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 530 states have (on average 1.3377358490566038) internal successors, (709), 533 states have internal predecessors, (709), 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 18:52:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 709 transitions. [2022-01-10 18:52:27,204 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 709 transitions. Word has length 49 [2022-01-10 18:52:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:27,205 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 709 transitions. [2022-01-10 18:52:27,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 709 transitions. [2022-01-10 18:52:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:52:27,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:27,211 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, 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, 1] [2022-01-10 18:52:27,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:52:27,211 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1468048714, now seen corresponding path program 1 times [2022-01-10 18:52:27,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773717425] [2022-01-10 18:52:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:27,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:27,654 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 18:52:27,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:27,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773717425] [2022-01-10 18:52:27,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773717425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:27,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:27,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:52:27,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146564248] [2022-01-10 18:52:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:27,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:52:27,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:52:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:52:27,657 INFO L87 Difference]: Start difference. First operand 534 states and 709 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:30,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:31,439 INFO L93 Difference]: Finished difference Result 1002 states and 1408 transitions. [2022-01-10 18:52:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:52:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 18:52:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:31,442 INFO L225 Difference]: With dead ends: 1002 [2022-01-10 18:52:31,442 INFO L226 Difference]: Without dead ends: 666 [2022-01-10 18:52:31,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:52:31,444 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 1247 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:31,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1247 Valid, 1300 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 18:52:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-01-10 18:52:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 556. [2022-01-10 18:52:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 552 states have (on average 1.3858695652173914) internal successors, (765), 555 states have internal predecessors, (765), 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 18:52:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 765 transitions. [2022-01-10 18:52:31,485 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 765 transitions. Word has length 49 [2022-01-10 18:52:31,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:31,485 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 765 transitions. [2022-01-10 18:52:31,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 765 transitions. [2022-01-10 18:52:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:52:31,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:31,486 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, 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, 1] [2022-01-10 18:52:31,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:52:31,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash -286067176, now seen corresponding path program 1 times [2022-01-10 18:52:31,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:31,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689143943] [2022-01-10 18:52:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:31,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:31,614 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 18:52:31,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:31,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689143943] [2022-01-10 18:52:31,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689143943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:31,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:31,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:31,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703972741] [2022-01-10 18:52:31,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:31,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:31,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:31,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:31,616 INFO L87 Difference]: Start difference. First operand 556 states and 765 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:31,709 INFO L93 Difference]: Finished difference Result 1117 states and 1601 transitions. [2022-01-10 18:52:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 18:52:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:31,712 INFO L225 Difference]: With dead ends: 1117 [2022-01-10 18:52:31,712 INFO L226 Difference]: Without dead ends: 825 [2022-01-10 18:52:31,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:31,716 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 261 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:31,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 807 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-01-10 18:52:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 818. [2022-01-10 18:52:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 814 states have (on average 1.4103194103194103) internal successors, (1148), 817 states have internal predecessors, (1148), 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 18:52:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1148 transitions. [2022-01-10 18:52:31,793 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1148 transitions. Word has length 49 [2022-01-10 18:52:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:31,793 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1148 transitions. [2022-01-10 18:52:31,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1148 transitions. [2022-01-10 18:52:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:52:31,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:31,796 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, 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, 1] [2022-01-10 18:52:31,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:52:31,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1488025407, now seen corresponding path program 1 times [2022-01-10 18:52:31,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:31,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562350318] [2022-01-10 18:52:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:31,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:31,922 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 18:52:31,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:31,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562350318] [2022-01-10 18:52:31,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562350318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:31,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:31,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:31,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104212314] [2022-01-10 18:52:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:31,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:31,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:31,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:31,924 INFO L87 Difference]: Start difference. First operand 818 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:32,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:32,018 INFO L93 Difference]: Finished difference Result 1669 states and 2394 transitions. [2022-01-10 18:52:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:32,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 18:52:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:32,023 INFO L225 Difference]: With dead ends: 1669 [2022-01-10 18:52:32,023 INFO L226 Difference]: Without dead ends: 1109 [2022-01-10 18:52:32,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:32,029 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 219 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:32,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 951 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-10 18:52:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1099. [2022-01-10 18:52:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1095 states have (on average 1.4009132420091324) internal successors, (1534), 1098 states have internal predecessors, (1534), 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 18:52:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1534 transitions. [2022-01-10 18:52:32,092 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1534 transitions. Word has length 49 [2022-01-10 18:52:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:32,093 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1534 transitions. [2022-01-10 18:52:32,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1534 transitions. [2022-01-10 18:52:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:52:32,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:32,095 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, 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, 1, 1] [2022-01-10 18:52:32,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:52:32,095 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash 536934524, now seen corresponding path program 1 times [2022-01-10 18:52:32,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:32,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306593600] [2022-01-10 18:52:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:32,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:32,496 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 18:52:32,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:32,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306593600] [2022-01-10 18:52:32,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306593600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:32,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:32,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:52:32,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816560766] [2022-01-10 18:52:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:32,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:52:32,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:52:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:52:32,498 INFO L87 Difference]: Start difference. First operand 1099 states and 1534 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 18:52:35,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:38,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:41,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:44,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:45,602 INFO L93 Difference]: Finished difference Result 5886 states and 8549 transitions. [2022-01-10 18:52:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:52:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2022-01-10 18:52:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:45,623 INFO L225 Difference]: With dead ends: 5886 [2022-01-10 18:52:45,623 INFO L226 Difference]: Without dead ends: 5038 [2022-01-10 18:52:45,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:52:45,625 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 3117 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:45,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3117 Valid, 1386 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 616 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2022-01-10 18:52:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2022-01-10 18:52:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2184. [2022-01-10 18:52:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2180 states have (on average 1.424770642201835) internal successors, (3106), 2183 states have internal predecessors, (3106), 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 18:52:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3106 transitions. [2022-01-10 18:52:46,050 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3106 transitions. Word has length 50 [2022-01-10 18:52:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:46,050 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3106 transitions. [2022-01-10 18:52:46,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 18:52:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3106 transitions. [2022-01-10 18:52:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:52:46,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:46,052 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, 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, 1, 1] [2022-01-10 18:52:46,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:52:46,052 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:46,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2076589285, now seen corresponding path program 1 times [2022-01-10 18:52:46,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:46,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580605104] [2022-01-10 18:52:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:46,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:46,441 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 18:52:46,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:46,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580605104] [2022-01-10 18:52:46,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580605104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:46,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:46,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:52:46,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896907565] [2022-01-10 18:52:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:46,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:52:46,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:52:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:52:46,443 INFO L87 Difference]: Start difference. First operand 2184 states and 3106 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 18:52:53,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:55,475 INFO L93 Difference]: Finished difference Result 10885 states and 15933 transitions. [2022-01-10 18:52:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:52:55,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2022-01-10 18:52:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:55,499 INFO L225 Difference]: With dead ends: 10885 [2022-01-10 18:52:55,499 INFO L226 Difference]: Without dead ends: 9179 [2022-01-10 18:52:55,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:52:55,502 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 2325 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:55,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2325 Valid, 1590 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 839 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-01-10 18:52:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9179 states. [2022-01-10 18:52:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9179 to 4264. [2022-01-10 18:52:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4260 states have (on average 1.4438967136150234) internal successors, (6151), 4263 states have internal predecessors, (6151), 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 18:52:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6151 transitions. [2022-01-10 18:52:56,658 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6151 transitions. Word has length 50 [2022-01-10 18:52:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:56,659 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6151 transitions. [2022-01-10 18:52:56,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 18:52:56,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6151 transitions. [2022-01-10 18:52:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:52:56,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:56,665 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, 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, 1, 1] [2022-01-10 18:52:56,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:52:56,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2024136936, now seen corresponding path program 1 times [2022-01-10 18:52:56,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:56,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449004147] [2022-01-10 18:52:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:56,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:56,926 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 18:52:56,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449004147] [2022-01-10 18:52:56,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449004147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:56,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:56,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:56,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430321797] [2022-01-10 18:52:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:56,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:56,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:56,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:56,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:56,927 INFO L87 Difference]: Start difference. First operand 4264 states and 6151 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 18:53:00,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:02,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:04,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:07,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:09,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:14,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:17,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:19,651 INFO L93 Difference]: Finished difference Result 18561 states and 27667 transitions. [2022-01-10 18:53:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:53:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2022-01-10 18:53:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:19,691 INFO L225 Difference]: With dead ends: 18561 [2022-01-10 18:53:19,691 INFO L226 Difference]: Without dead ends: 15405 [2022-01-10 18:53:19,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:53:19,696 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1071 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 31 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:19,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 1476 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 765 Invalid, 7 Unknown, 0 Unchecked, 17.0s Time] [2022-01-10 18:53:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2022-01-10 18:53:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7432. [2022-01-10 18:53:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 7428 states have (on average 1.4629779213785676) internal successors, (10867), 7431 states have internal predecessors, (10867), 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 18:53:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 10867 transitions. [2022-01-10 18:53:22,497 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 10867 transitions. Word has length 50 [2022-01-10 18:53:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:22,497 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 10867 transitions. [2022-01-10 18:53:22,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 18:53:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 10867 transitions. [2022-01-10 18:53:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:53:22,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:22,499 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, 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, 1, 1] [2022-01-10 18:53:22,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:53:22,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1643711379, now seen corresponding path program 1 times [2022-01-10 18:53:22,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:22,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453325161] [2022-01-10 18:53:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:22,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:22,694 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 18:53:22,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453325161] [2022-01-10 18:53:22,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453325161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:22,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:22,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:53:22,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944775406] [2022-01-10 18:53:22,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:22,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:53:22,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:53:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:53:22,696 INFO L87 Difference]: Start difference. First operand 7432 states and 10867 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 18:53:26,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:28,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []