/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_inw.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:33:29,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:33:29,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:33:29,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:33:29,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:33:29,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:33:29,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:33:29,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:33:29,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:33:29,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:33:29,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:33:29,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:33:29,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:33:29,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:33:29,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:33:29,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:33:29,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:33:29,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:33:29,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:33:29,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:33:29,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:33:29,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 23:33:29,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:33:29,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:33:29,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:33:29,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:33:29,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:33:29,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:33:29,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:33:29,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:33:29,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:33:29,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:33:29,141 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:33:29,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:33:29,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:33:29,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:33:29,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:33:29,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:33:29,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:33:29,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:33:29,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:33:29,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:33:29,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:33:29,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:33:29,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:33:29,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:33:29,146 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:33:29,146 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:33:29,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:33:29,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:33:29,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:33:29,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:33:29,386 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:33:29,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_inw.i [2022-01-10 23:33:29,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c3cee44/72c988076c604716aeafa7e80cde55f0/FLAG9f818d618 [2022-01-10 23:33:29,973 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:33:29,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ddv-machzwd/ddv_machzwd_inw.i [2022-01-10 23:33:30,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c3cee44/72c988076c604716aeafa7e80cde55f0/FLAG9f818d618 [2022-01-10 23:33:30,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c3cee44/72c988076c604716aeafa7e80cde55f0 [2022-01-10 23:33:30,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:33:30,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:33:30,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:33:30,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:33:30,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:33:30,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:33:30" (1/1) ... [2022-01-10 23:33:30,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c1e2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:30, skipping insertion in model container [2022-01-10 23:33:30,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:33:30" (1/1) ... [2022-01-10 23:33:30,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:33:30,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:33:30,521 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_inw.i[452,465] [2022-01-10 23:33:31,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:33:31,468 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:33:31,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:33:31,495 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_inw.i[452,465] [2022-01-10 23:33:31,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:33:31,686 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:33:31,695 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_inw.i[452,465] [2022-01-10 23:33:31,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:33:31,971 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:33:31,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31 WrapperNode [2022-01-10 23:33:31,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:33:31,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:33:31,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:33:31,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:33:31,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,224 INFO L137 Inliner]: procedures = 481, calls = 2681, calls flagged for inlining = 201, calls inlined = 255, statements flattened = 4089 [2022-01-10 23:33:32,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:33:32,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:33:32,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:33:32,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:33:32,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:33:32,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:33:32,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:33:32,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:33:32,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (1/1) ... [2022-01-10 23:33:32,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:33:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:33:32,520 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 23:33:32,545 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 23:33:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:33:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 23:33:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 23:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 23:33:32,908 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:33:32,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:33:45,620 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:33:45,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:33:45,630 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 23:33:45,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:33:45 BoogieIcfgContainer [2022-01-10 23:33:45,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:33:45,633 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:33:45,633 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:33:45,638 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:33:45,640 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:33:45" (1/1) ... [2022-01-10 23:33:46,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:33:46 BasicIcfg [2022-01-10 23:33:46,218 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:33:46,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:33:46,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:33:46,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:33:46,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:33:30" (1/4) ... [2022-01-10 23:33:46,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea8123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:33:46, skipping insertion in model container [2022-01-10 23:33:46,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:33:31" (2/4) ... [2022-01-10 23:33:46,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea8123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:33:46, skipping insertion in model container [2022-01-10 23:33:46,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:33:45" (3/4) ... [2022-01-10 23:33:46,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea8123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:33:46, skipping insertion in model container [2022-01-10 23:33:46,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:33:46" (4/4) ... [2022-01-10 23:33:46,224 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.iTransformedIcfg [2022-01-10 23:33:46,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:33:46,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-01-10 23:33:46,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:33:46,384 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 23:33:46,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-01-10 23:33:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 450 states have (on average 1.28) internal successors, (576), 459 states have internal predecessors, (576), 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 23:33:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 23:33:46,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:33:46,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:33:46,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 23:33:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:33:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash 645203946, now seen corresponding path program 1 times [2022-01-10 23:33:46,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:33:46,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920697325] [2022-01-10 23:33:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:33:46,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:33:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:33:48,407 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 23:33:48,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:33:48,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920697325] [2022-01-10 23:33:48,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920697325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:33:48,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:33:48,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:33:48,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430087829] [2022-01-10 23:33:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:33:48,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:33:48,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:33:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:33:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:33:48,452 INFO L87 Difference]: Start difference. First operand has 460 states, 450 states have (on average 1.28) internal successors, (576), 459 states have internal predecessors, (576), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:33:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:33:48,498 INFO L93 Difference]: Finished difference Result 915 states and 1145 transitions. [2022-01-10 23:33:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:33:48,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 23:33:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:33:48,510 INFO L225 Difference]: With dead ends: 915 [2022-01-10 23:33:48,511 INFO L226 Difference]: Without dead ends: 440 [2022-01-10 23:33:48,517 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 23:33:48,520 INFO L933 BasicCegarLoop]: 556 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, 556 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 23:33:48,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:33:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-10 23:33:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2022-01-10 23:33:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 431 states have (on average 1.2412993039443156) internal successors, (535), 439 states have internal predecessors, (535), 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 23:33:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 535 transitions. [2022-01-10 23:33:48,575 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 535 transitions. Word has length 12 [2022-01-10 23:33:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:33:48,576 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 535 transitions. [2022-01-10 23:33:48,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:33:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 535 transitions. [2022-01-10 23:33:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 23:33:48,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:33:48,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:33:48,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:33:48,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 23:33:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:33:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -274746836, now seen corresponding path program 1 times [2022-01-10 23:33:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:33:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399954552] [2022-01-10 23:33:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:33:48,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:33:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:33:50,476 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 23:33:50,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:33:50,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399954552] [2022-01-10 23:33:50,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399954552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:33:50,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:33:50,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:33:50,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630494022] [2022-01-10 23:33:50,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:33:50,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:33:50,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:33:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:33:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:33:50,485 INFO L87 Difference]: Start difference. First operand 440 states and 535 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23:33:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:33:50,710 INFO L93 Difference]: Finished difference Result 879 states and 1070 transitions. [2022-01-10 23:33:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:33:50,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-01-10 23:33:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:33:50,717 INFO L225 Difference]: With dead ends: 879 [2022-01-10 23:33:50,717 INFO L226 Difference]: Without dead ends: 444 [2022-01-10 23:33:50,718 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 23:33:50,719 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 2 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1057 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 23:33:50,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1057 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:33:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-10 23:33:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2022-01-10 23:33:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 433 states have (on average 1.2401847575057736) internal successors, (537), 441 states have internal predecessors, (537), 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 23:33:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 537 transitions. [2022-01-10 23:33:50,742 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 537 transitions. Word has length 12 [2022-01-10 23:33:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:33:50,742 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 537 transitions. [2022-01-10 23:33:50,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 23:33:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 537 transitions. [2022-01-10 23:33:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 23:33:50,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:33:50,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:33:50,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:33:50,743 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 23:33:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:33:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1322384392, now seen corresponding path program 1 times [2022-01-10 23:33:50,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:33:50,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8042104] [2022-01-10 23:33:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:33:50,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:33:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:33:52,747 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 23:33:52,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:33:52,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8042104] [2022-01-10 23:33:52,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8042104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:33:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989791066] [2022-01-10 23:33:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:33:52,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:33:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:33:52,751 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 23:33:52,754 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 23:33:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:33:58,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 9339 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 23:33:58,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:33:58,844 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 23:33:58,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:33:58,990 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 23:33:58,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989791066] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:33:58,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:33:58,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 23:33:58,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281105282] [2022-01-10 23:33:58,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:33:58,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:33:58,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:33:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:33:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:33:58,998 INFO L87 Difference]: Start difference. First operand 442 states and 537 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 23:33:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:33:59,314 INFO L93 Difference]: Finished difference Result 884 states and 1076 transitions. [2022-01-10 23:33:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:33:59,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 16 [2022-01-10 23:33:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:33:59,317 INFO L225 Difference]: With dead ends: 884 [2022-01-10 23:33:59,317 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 23:33:59,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 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 23:33:59,318 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 533 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:33:59,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1058 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:33:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 23:33:59,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 23:33:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 439 states have (on average 1.234624145785877) internal successors, (542), 447 states have internal predecessors, (542), 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 23:33:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 542 transitions. [2022-01-10 23:33:59,330 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 542 transitions. Word has length 16 [2022-01-10 23:33:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:33:59,331 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 542 transitions. [2022-01-10 23:33:59,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 23:33:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 542 transitions. [2022-01-10 23:33:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 23:33:59,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:33:59,332 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:33:59,390 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 23:33:59,545 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 23:33:59,546 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 23:33:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:33:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1594592642, now seen corresponding path program 2 times [2022-01-10 23:33:59,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:33:59,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927192679] [2022-01-10 23:33:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:33:59,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:34:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:34:02,184 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 23:34:02,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:34:02,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927192679] [2022-01-10 23:34:02,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927192679] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:34:02,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19226588] [2022-01-10 23:34:02,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 23:34:02,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:34:02,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:34:02,187 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 23:34:02,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process