/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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:56:00,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:56:00,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:56:00,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:56:00,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:56:00,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:56:00,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:56:00,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:56:00,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:56:00,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:56:00,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:56:00,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:56:00,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:56:00,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:56:00,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:56:00,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:56:00,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:56:00,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:56:00,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:56:00,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:56:00,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:56:00,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:56:00,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:56:00,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:56:00,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:56:00,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:56:00,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:56:00,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:56:00,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:56:00,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:56:00,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:56:00,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:56:00,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:56:00,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:56:00,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:56:00,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:56:00,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:56:00,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:56:00,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:56:00,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:56:00,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:56:00,215 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 18:56:00,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:56:00,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:56:00,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:56:00,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:56:00,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:56:00,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:56:00,240 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:56:00,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:56:00,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:56:00,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:56:00,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:56:00,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:56:00,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:56:00,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:56:00,241 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:56:00,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:56:00,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:56:00,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:56:00,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:56:00,244 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:56:00,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:56:00,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:56:00,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:56:00,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:56:00,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:56:00,473 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:56:00,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 18:56:00,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9bb3c06/ac745ad7410b444c9dabc242fe829d85/FLAG7e6ef1b2a [2022-01-10 18:56:01,172 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:56:01,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-10 18:56:01,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9bb3c06/ac745ad7410b444c9dabc242fe829d85/FLAG7e6ef1b2a [2022-01-10 18:56:01,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9bb3c06/ac745ad7410b444c9dabc242fe829d85 [2022-01-10 18:56:01,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:56:01,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:56:01,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:56:01,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:56:01,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:56:01,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:56:01" (1/1) ... [2022-01-10 18:56:01,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e0bced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:01, skipping insertion in model container [2022-01-10 18:56:01,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:56:01" (1/1) ... [2022-01-10 18:56:01,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:56:01,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:56:01,915 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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2022-01-10 18:56:02,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:56:02,852 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:56:02,902 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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2022-01-10 18:56:03,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:56:03,463 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:56:03,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03 WrapperNode [2022-01-10 18:56:03,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:56:03,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:56:03,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:56:03,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:56:03,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,729 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18572 [2022-01-10 18:56:03,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:56:03,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:56:03,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:56:03,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:56:03,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:03,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:04,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:56:04,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:56:04,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:56:04,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:56:04,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (1/1) ... [2022-01-10 18:56:04,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:56:04,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:56:04,157 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 18:56:04,173 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 18:56:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:56:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:56:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:56:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:56:04,666 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:56:04,667 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:56:11,879 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:56:11,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:56:11,909 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:56:11,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:11 BoogieIcfgContainer [2022-01-10 18:56:11,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:56:11,915 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:56:11,916 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:56:11,917 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:56:11,919 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:11" (1/1) ... [2022-01-10 18:56:15,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:56:15 BasicIcfg [2022-01-10 18:56:15,770 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:56:15,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:56:15,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:56:15,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:56:15,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:56:01" (1/4) ... [2022-01-10 18:56:15,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7735f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:56:15, skipping insertion in model container [2022-01-10 18:56:15,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:03" (2/4) ... [2022-01-10 18:56:15,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7735f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:56:15, skipping insertion in model container [2022-01-10 18:56:15,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:11" (3/4) ... [2022-01-10 18:56:15,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7735f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:56:15, skipping insertion in model container [2022-01-10 18:56:15,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:56:15" (4/4) ... [2022-01-10 18:56:15,777 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-10 18:56:15,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:56:15,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:56:15,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:56:15,828 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:56:15,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:56:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 2868 states, 2866 states have (on average 1.9089323098394975) internal successors, (5471), 2867 states have internal predecessors, (5471), 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 18:56:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:56:15,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:15,894 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, 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 18:56:15,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash -880442035, now seen corresponding path program 1 times [2022-01-10 18:56:15,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:15,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548332696] [2022-01-10 18:56:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:15,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:17,114 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 18:56:17,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:17,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548332696] [2022-01-10 18:56:17,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548332696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:17,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:17,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:56:17,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283703538] [2022-01-10 18:56:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:17,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:56:17,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:56:17,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:56:17,145 INFO L87 Difference]: Start difference. First operand has 2868 states, 2866 states have (on average 1.9089323098394975) internal successors, (5471), 2867 states have internal predecessors, (5471), 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 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:56:28,305 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 18:56:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:31,783 INFO L93 Difference]: Finished difference Result 6705 states and 12359 transitions. [2022-01-10 18:56:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 18:56:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 18:56:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:31,816 INFO L225 Difference]: With dead ends: 6705 [2022-01-10 18:56:31,816 INFO L226 Difference]: Without dead ends: 4140 [2022-01-10 18:56:31,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:56:31,829 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 14158 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14158 SdHoareTripleChecker+Valid, 9164 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:31,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14158 Valid, 9164 Invalid, 2729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 2695 Invalid, 1 Unknown, 0 Unchecked, 13.3s Time] [2022-01-10 18:56:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2022-01-10 18:56:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3556. [2022-01-10 18:56:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 1.3395218002812939) internal successors, (4762), 3555 states have internal predecessors, (4762), 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 18:56:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 4762 transitions. [2022-01-10 18:56:32,254 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 4762 transitions. Word has length 78 [2022-01-10 18:56:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:32,255 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 4762 transitions. [2022-01-10 18:56:32,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:56:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 4762 transitions. [2022-01-10 18:56:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:56:32,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:32,263 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, 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 18:56:32,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:56:32,263 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1994724110, now seen corresponding path program 1 times [2022-01-10 18:56:32,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:32,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441792432] [2022-01-10 18:56:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:32,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:32,503 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 18:56:32,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:32,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441792432] [2022-01-10 18:56:32,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441792432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:32,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:32,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:56:32,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922439762] [2022-01-10 18:56:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:32,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:56:32,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:56:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:56:32,506 INFO L87 Difference]: Start difference. First operand 3556 states and 4762 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 18:56:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:32,984 INFO L93 Difference]: Finished difference Result 6573 states and 9112 transitions. [2022-01-10 18:56:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:56:32,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-01-10 18:56:32,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:33,000 INFO L225 Difference]: With dead ends: 6573 [2022-01-10 18:56:33,000 INFO L226 Difference]: Without dead ends: 5308 [2022-01-10 18:56:33,003 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 18:56:33,004 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 2364 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:33,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2364 Valid, 6572 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:56:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2022-01-10 18:56:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5300. [2022-01-10 18:56:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 1.3515757690130212) internal successors, (7162), 5299 states have internal predecessors, (7162), 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 18:56:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7162 transitions. [2022-01-10 18:56:33,416 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7162 transitions. Word has length 79 [2022-01-10 18:56:33,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:33,418 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 7162 transitions. [2022-01-10 18:56:33,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 18:56:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7162 transitions. [2022-01-10 18:56:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:56:33,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:33,427 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, 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 18:56:33,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:56:33,427 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:33,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash -475658679, now seen corresponding path program 1 times [2022-01-10 18:56:33,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:33,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925507521] [2022-01-10 18:56:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:33,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:33,953 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 18:56:33,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925507521] [2022-01-10 18:56:33,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925507521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:33,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:33,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:56:33,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297238722] [2022-01-10 18:56:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:33,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:56:33,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:56:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:56:33,955 INFO L87 Difference]: Start difference. First operand 5300 states and 7162 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 18:56:41,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:56:45,442 WARN L534 Checker$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 18:56:49,071 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 18:56:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:49,384 INFO L93 Difference]: Finished difference Result 9693 states and 13813 transitions. [2022-01-10 18:56:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:56:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 79 [2022-01-10 18:56:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:49,404 INFO L225 Difference]: With dead ends: 9693 [2022-01-10 18:56:49,404 INFO L226 Difference]: Without dead ends: 7533 [2022-01-10 18:56:49,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:56:49,408 INFO L933 BasicCegarLoop]: 2878 mSDtfsCounter, 10470 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 25 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10470 SdHoareTripleChecker+Valid, 5896 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:49,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10470 Valid, 5896 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1552 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2022-01-10 18:56:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7533 states. [2022-01-10 18:56:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7533 to 6354. [2022-01-10 18:56:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6353 states have (on average 1.3891075082638125) internal successors, (8825), 6353 states have internal predecessors, (8825), 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 18:56:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 8825 transitions. [2022-01-10 18:56:50,425 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 8825 transitions. Word has length 79 [2022-01-10 18:56:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:50,426 INFO L470 AbstractCegarLoop]: Abstraction has 6354 states and 8825 transitions. [2022-01-10 18:56:50,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 18:56:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 8825 transitions. [2022-01-10 18:56:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:56:50,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:50,435 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, 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 18:56:50,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:56:50,435 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -846469894, now seen corresponding path program 1 times [2022-01-10 18:56:50,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:50,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368332079] [2022-01-10 18:56:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:50,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:50,653 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 18:56:50,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:50,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368332079] [2022-01-10 18:56:50,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368332079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:50,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:50,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:56:50,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455273495] [2022-01-10 18:56:50,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:50,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:56:50,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:56:50,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:56:50,657 INFO L87 Difference]: Start difference. First operand 6354 states and 8825 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 18:56:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:52,131 INFO L93 Difference]: Finished difference Result 11126 states and 16164 transitions. [2022-01-10 18:56:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:56:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-01-10 18:56:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:52,153 INFO L225 Difference]: With dead ends: 11126 [2022-01-10 18:56:52,153 INFO L226 Difference]: Without dead ends: 8815 [2022-01-10 18:56:52,157 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 18:56:52,158 INFO L933 BasicCegarLoop]: 3099 mSDtfsCounter, 1345 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 5127 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:52,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 5127 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:56:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2022-01-10 18:56:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 7885. [2022-01-10 18:56:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7885 states, 7884 states have (on average 1.4146372399797058) internal successors, (11153), 7884 states have internal predecessors, (11153), 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 18:56:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7885 states to 7885 states and 11153 transitions. [2022-01-10 18:56:53,381 INFO L78 Accepts]: Start accepts. Automaton has 7885 states and 11153 transitions. Word has length 79 [2022-01-10 18:56:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:53,382 INFO L470 AbstractCegarLoop]: Abstraction has 7885 states and 11153 transitions. [2022-01-10 18:56:53,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 18:56:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7885 states and 11153 transitions. [2022-01-10 18:56:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:56:53,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:53,391 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, 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 18:56:53,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:56:53,391 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash 41814959, now seen corresponding path program 1 times [2022-01-10 18:56:53,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966321238] [2022-01-10 18:56:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:53,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:53,876 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 18:56:53,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:53,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966321238] [2022-01-10 18:56:53,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966321238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:53,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:53,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:56:53,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647115088] [2022-01-10 18:56:53,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:53,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:56:53,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:56:53,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:56:53,879 INFO L87 Difference]: Start difference. First operand 7885 states and 11153 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 18:57:01,085 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 []