/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/ddv-machzwd/ddv_machzwd_outb.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:43:46,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:43:46,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:43:46,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 17:43:46,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:43:46,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:43:46,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:43:46,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:43:46,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:43:46,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:43:46,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:43:46,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:43:46,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:43:46,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:43:46,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:43:46,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:43:46,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:43:46,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:43:46,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:43:46,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:43:46,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:43:46,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 17:43:46,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:43:46,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:43:46,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:43:46,891 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 17:43:46,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:43:46,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:43:46,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:43:46,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:43:46,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:43:46,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:43:46,921 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:43:46,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:43:46,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:43:46,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:43:46,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:43:46,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:43:46,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:43:46,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:43:46,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:43:46,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:43:46,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:43:46,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:43:46,926 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:43:46,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:43:47,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:43:47,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:43:47,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:43:47,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:43:47,185 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:43:47,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_outb.i [2022-01-10 17:43:47,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6de3e6a/038c67239f584694a97292aa952d04a9/FLAGacf98e715 [2022-01-10 17:43:47,772 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:43:47,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_outb.i [2022-01-10 17:43:47,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6de3e6a/038c67239f584694a97292aa952d04a9/FLAGacf98e715 [2022-01-10 17:43:47,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6de3e6a/038c67239f584694a97292aa952d04a9 [2022-01-10 17:43:47,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:43:48,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:43:48,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:43:48,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:43:48,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:43:48,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:43:47" (1/1) ... [2022-01-10 17:43:48,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72980aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:48, skipping insertion in model container [2022-01-10 17:43:48,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:43:47" (1/1) ... [2022-01-10 17:43:48,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:43:48,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:43:48,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-01-10 17:43:49,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:43:49,211 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:43:49,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:43:49,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-01-10 17:43:49,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:43:49,380 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:43:49,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-01-10 17:43:49,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:43:49,693 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:43:49,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49 WrapperNode [2022-01-10 17:43:49,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:43:49,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:43:49,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:43:49,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:43:49,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:49,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:49,922 INFO L137 Inliner]: procedures = 481, calls = 2681, calls flagged for inlining = 201, calls inlined = 285, statements flattened = 4359 [2022-01-10 17:43:49,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:43:49,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:43:49,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:43:49,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:43:49,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:49,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:49,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:49,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:50,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:50,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:50,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:50,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:43:50,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:43:50,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:43:50,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:43:50,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (1/1) ... [2022-01-10 17:43:50,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:43:50,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:43:50,156 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 17:43:50,161 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 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-01-10 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-01-10 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 17:43:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:43:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-01-10 17:43:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 17:43:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 17:43:50,573 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:43:50,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:44:03,120 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:44:03,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:44:03,129 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 17:44:03,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:44:03 BoogieIcfgContainer [2022-01-10 17:44:03,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:44:03,132 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:44:03,132 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:44:03,133 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:44:03,135 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:44:03" (1/1) ... [2022-01-10 17:44:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:44:03 BasicIcfg [2022-01-10 17:44:03,792 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:44:03,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:44:03,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:44:03,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:44:03,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:43:47" (1/4) ... [2022-01-10 17:44:03,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec02c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:44:03, skipping insertion in model container [2022-01-10 17:44:03,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:43:49" (2/4) ... [2022-01-10 17:44:03,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec02c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:44:03, skipping insertion in model container [2022-01-10 17:44:03,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:44:03" (3/4) ... [2022-01-10 17:44:03,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec02c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:44:03, skipping insertion in model container [2022-01-10 17:44:03,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:44:03" (4/4) ... [2022-01-10 17:44:03,798 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb.iTransformedIcfg [2022-01-10 17:44:03,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:44:03,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-01-10 17:44:03,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:44:03,852 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 17:44:03,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-01-10 17:44:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 610 states, 570 states have (on average 1.3263157894736841) internal successors, (756), 609 states have internal predecessors, (756), 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 17:44:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 17:44:03,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:44:03,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:44:03,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION (and 36 more)] === [2022-01-10 17:44:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:44:03,892 INFO L85 PathProgramCache]: Analyzing trace with hash 313415002, now seen corresponding path program 1 times [2022-01-10 17:44:03,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:44:03,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339869905] [2022-01-10 17:44:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:44:03,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:44:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:44:05,654 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 17:44:05,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:44:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339869905] [2022-01-10 17:44:05,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339869905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:44:05,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:44:05,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:44:05,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551121696] [2022-01-10 17:44:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:44:05,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 17:44:05,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:44:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 17:44:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:44:05,698 INFO L87 Difference]: Start difference. First operand has 610 states, 570 states have (on average 1.3263157894736841) internal successors, (756), 609 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:44:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:44:05,754 INFO L93 Difference]: Finished difference Result 1215 states and 1505 transitions. [2022-01-10 17:44:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 17:44:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 17:44:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:44:05,774 INFO L225 Difference]: With dead ends: 1215 [2022-01-10 17:44:05,774 INFO L226 Difference]: Without dead ends: 593 [2022-01-10 17:44:05,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:44:05,782 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:44:05,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:44:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-10 17:44:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-01-10 17:44:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 554 states have (on average 1.2418772563176896) internal successors, (688), 592 states have internal predecessors, (688), 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 17:44:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 688 transitions. [2022-01-10 17:44:05,844 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 688 transitions. Word has length 11 [2022-01-10 17:44:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:44:05,845 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 688 transitions. [2022-01-10 17:44:05,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:44:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 688 transitions. [2022-01-10 17:44:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 17:44:05,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:44:05,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:44:05,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:44:05,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION (and 36 more)] === [2022-01-10 17:44:05,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:44:05,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2084854488, now seen corresponding path program 1 times [2022-01-10 17:44:05,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:44:05,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555919627] [2022-01-10 17:44:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:44:05,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:44:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:44:07,489 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 17:44:07,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:44:07,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555919627] [2022-01-10 17:44:07,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555919627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:44:07,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:44:07,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:44:07,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992081020] [2022-01-10 17:44:07,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:44:07,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:44:07,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:44:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:44:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:44:07,493 INFO L87 Difference]: Start difference. First operand 593 states and 688 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:44:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:44:07,732 INFO L93 Difference]: Finished difference Result 1185 states and 1376 transitions. [2022-01-10 17:44:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:44:07,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 17:44:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:44:07,743 INFO L225 Difference]: With dead ends: 1185 [2022-01-10 17:44:07,743 INFO L226 Difference]: Without dead ends: 597 [2022-01-10 17:44:07,744 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 17:44:07,745 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 2 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:44:07,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1363 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:44:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-01-10 17:44:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 595. [2022-01-10 17:44:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 556 states have (on average 1.2410071942446044) internal successors, (690), 594 states have internal predecessors, (690), 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 17:44:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 690 transitions. [2022-01-10 17:44:07,776 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 690 transitions. Word has length 11 [2022-01-10 17:44:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:44:07,776 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 690 transitions. [2022-01-10 17:44:07,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:44:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 690 transitions. [2022-01-10 17:44:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 17:44:07,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:44:07,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:44:07,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:44:07,779 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION (and 36 more)] === [2022-01-10 17:44:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:44:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash 55985148, now seen corresponding path program 1 times [2022-01-10 17:44:07,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:44:07,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065896600] [2022-01-10 17:44:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:44:07,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:44:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:44:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 17:44:09,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:44:09,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065896600] [2022-01-10 17:44:09,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065896600] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:44:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017987682] [2022-01-10 17:44:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:44:09,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:44:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:44:09,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:44:09,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 17:44:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:44:15,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 9331 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 17:44:15,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:44:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 17:44:15,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:44:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 17:44:15,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017987682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:44:15,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:44:15,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 17:44:15,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578621703] [2022-01-10 17:44:15,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:44:15,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:44:15,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:44:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:44:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:44:15,617 INFO L87 Difference]: Start difference. First operand 595 states and 690 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:44:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:44:16,102 INFO L93 Difference]: Finished difference Result 1190 states and 1382 transitions. [2022-01-10 17:44:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:44:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 17:44:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:44:16,105 INFO L225 Difference]: With dead ends: 1190 [2022-01-10 17:44:16,105 INFO L226 Difference]: Without dead ends: 601 [2022-01-10 17:44:16,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:44:16,107 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 686 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:44:16,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1365 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:44:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-10 17:44:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-01-10 17:44:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 562 states have (on average 1.2366548042704626) internal successors, (695), 600 states have internal predecessors, (695), 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 17:44:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 695 transitions. [2022-01-10 17:44:16,121 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 695 transitions. Word has length 15 [2022-01-10 17:44:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:44:16,122 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 695 transitions. [2022-01-10 17:44:16,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:44:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 695 transitions. [2022-01-10 17:44:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 17:44:16,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:44:16,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:44:16,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 17:44:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:44:16,324 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION (and 36 more)] === [2022-01-10 17:44:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:44:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 296341762, now seen corresponding path program 2 times [2022-01-10 17:44:16,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:44:16,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723656902] [2022-01-10 17:44:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:44:16,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:44:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:44:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 17:44:18,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:44:18,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723656902] [2022-01-10 17:44:18,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723656902] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:44:18,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200437164] [2022-01-10 17:44:18,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 17:44:18,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:44:18,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:44:18,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:44:18,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process