/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:53:02,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:53:02,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:53:03,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 05:53:03,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 05:53:03,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 05:53:03,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 05:53:03,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 05:53:03,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 05:53:03,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 05:53:03,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 05:53:03,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 05:53:03,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 05:53:03,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 05:53:03,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 05:53:03,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 05:53:03,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 05:53:03,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:53:03,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:53:03,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:53:03,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:53:03,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:53:03,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:53:03,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:53:03,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:53:03,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:53:03,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:53:03,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:53:03,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:53:03,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:53:03,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:53:03,124 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:53:03,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:53:03,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:53:03,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:53:03,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:53:03,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:53:03,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:53:03,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:53:03,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:53:03,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:53:03,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:53:03,126 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:53:03,126 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:53:03,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:53:03,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:53:03,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:53:03,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:53:03,402 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:53:03,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2021-05-06 05:53:03,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21746b97e/5ed11780416141c3aec6d2300d160c89/FLAG520d000ed [2021-05-06 05:53:03,980 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:53:03,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2021-05-06 05:53:04,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21746b97e/5ed11780416141c3aec6d2300d160c89/FLAG520d000ed [2021-05-06 05:53:04,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21746b97e/5ed11780416141c3aec6d2300d160c89 [2021-05-06 05:53:04,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:53:04,244 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:53:04,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:53:04,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:53:04,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:53:04,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125e13ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04, skipping insertion in model container [2021-05-06 05:53:04,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:53:04,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:53:04,643 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c[32736,32749] [2021-05-06 05:53:04,648 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c[33038,33051] [2021-05-06 05:53:04,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:53:04,683 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:53:04,763 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c[32736,32749] [2021-05-06 05:53:04,766 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c[33038,33051] [2021-05-06 05:53:04,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:53:04,795 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:53:04,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04 WrapperNode [2021-05-06 05:53:04,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:53:04,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:53:04,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:53:04,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:53:04,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... [2021-05-06 05:53:04,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:53:04,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:53:04,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:53:04,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:53:04,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:53:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:53:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:53:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:53:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 05:53:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:53:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:53:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:53:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:53:05,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:53:05,734 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 05:53:05,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:53:05 BoogieIcfgContainer [2021-05-06 05:53:05,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:53:05,737 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:53:05,737 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:53:05,737 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:53:05,739 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:53:05" (1/1) ... [2021-05-06 05:53:05,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:53:05 BasicIcfg [2021-05-06 05:53:05,772 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:53:05,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:53:05,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:53:05,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:53:05,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:53:04" (1/4) ... [2021-05-06 05:53:05,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffe870c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:53:05, skipping insertion in model container [2021-05-06 05:53:05,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:53:04" (2/4) ... [2021-05-06 05:53:05,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffe870c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:53:05, skipping insertion in model container [2021-05-06 05:53:05,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:53:05" (3/4) ... [2021-05-06 05:53:05,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffe870c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:53:05, skipping insertion in model container [2021-05-06 05:53:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:53:05" (4/4) ... [2021-05-06 05:53:05,779 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.p+nlh-reducer.cJordan [2021-05-06 05:53:05,783 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:53:05,785 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-05-06 05:53:05,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-06 05:53:05,814 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:53:05,815 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:53:05,815 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:53:05,815 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:53:05,815 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:53:05,815 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:53:05,815 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:53:05,815 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:53:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 249 states have (on average 1.9558232931726907) internal successors, (487), 251 states have internal predecessors, (487), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:53:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 05:53:05,854 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:53:05,854 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:53:05,854 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:53:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:53:05,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2074136825, now seen corresponding path program 1 times [2021-05-06 05:53:05,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:53:05,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870681975] [2021-05-06 05:53:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:53:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:53:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:53:06,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:53:06,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870681975] [2021-05-06 05:53:06,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870681975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:53:06,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:53:06,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 05:53:06,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110117233] [2021-05-06 05:53:06,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 05:53:06,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:53:06,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 05:53:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:53:06,359 INFO L87 Difference]: Start difference. First operand has 256 states, 249 states have (on average 1.9558232931726907) internal successors, (487), 251 states have internal predecessors, (487), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:53:07,510 INFO L93 Difference]: Finished difference Result 267 states and 501 transitions. [2021-05-06 05:53:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 05:53:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-06 05:53:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:53:07,521 INFO L225 Difference]: With dead ends: 267 [2021-05-06 05:53:07,521 INFO L226 Difference]: Without dead ends: 257 [2021-05-06 05:53:07,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-06 05:53:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-06 05:53:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2021-05-06 05:53:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 246 states have internal predecessors, (284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 287 transitions. [2021-05-06 05:53:07,560 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 287 transitions. Word has length 141 [2021-05-06 05:53:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:53:07,561 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 287 transitions. [2021-05-06 05:53:07,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 287 transitions. [2021-05-06 05:53:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-06 05:53:07,564 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:53:07,564 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:53:07,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:53:07,565 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:53:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:53:07,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1866133804, now seen corresponding path program 1 times [2021-05-06 05:53:07,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:53:07,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101471985] [2021-05-06 05:53:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:53:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:07,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:53:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:53:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:53:07,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:53:07,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101471985] [2021-05-06 05:53:07,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101471985] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:53:07,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:53:07,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 05:53:07,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411372143] [2021-05-06 05:53:07,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 05:53:07,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:53:07,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 05:53:07,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:53:07,765 INFO L87 Difference]: Start difference. First operand 250 states and 287 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:53:08,490 INFO L93 Difference]: Finished difference Result 260 states and 300 transitions. [2021-05-06 05:53:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 05:53:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-06 05:53:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:53:08,491 INFO L225 Difference]: With dead ends: 260 [2021-05-06 05:53:08,491 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 05:53:08,492 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 202.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-06 05:53:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 05:53:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 05:53:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-05-06 05:53:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 05:53:08,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2021-05-06 05:53:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:53:08,493 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 05:53:08,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:53:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 05:53:08,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 05:53:08,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 05:53:08,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:53:08 BasicIcfg [2021-05-06 05:53:08,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 05:53:08,497 INFO L168 Benchmark]: Toolchain (without parser) took 4252.96 ms. Allocated memory was 186.6 MB in the beginning and 362.8 MB in the end (delta: 176.2 MB). Free memory was 150.1 MB in the beginning and 290.2 MB in the end (delta: -140.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:08,497 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory is still 167.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:53:08,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.96 ms. Allocated memory is still 186.6 MB. Free memory was 149.8 MB in the beginning and 145.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:08,498 INFO L168 Benchmark]: Boogie Preprocessor took 54.66 ms. Allocated memory is still 186.6 MB. Free memory was 145.6 MB in the beginning and 141.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:08,499 INFO L168 Benchmark]: RCFGBuilder took 884.79 ms. Allocated memory was 186.6 MB in the beginning and 247.5 MB in the end (delta: 60.8 MB). Free memory was 140.9 MB in the beginning and 135.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:08,499 INFO L168 Benchmark]: IcfgTransformer took 35.81 ms. Allocated memory is still 247.5 MB. Free memory was 135.1 MB in the beginning and 130.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 05:53:08,499 INFO L168 Benchmark]: TraceAbstraction took 2722.70 ms. Allocated memory was 247.5 MB in the beginning and 362.8 MB in the end (delta: 115.3 MB). Free memory was 130.4 MB in the beginning and 290.2 MB in the end (delta: -159.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:53:08,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory is still 167.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 548.96 ms. Allocated memory is still 186.6 MB. Free memory was 149.8 MB in the beginning and 145.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.66 ms. Allocated memory is still 186.6 MB. Free memory was 145.6 MB in the beginning and 141.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 884.79 ms. Allocated memory was 186.6 MB in the beginning and 247.5 MB in the end (delta: 60.8 MB). Free memory was 140.9 MB in the beginning and 135.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 35.81 ms. Allocated memory is still 247.5 MB. Free memory was 135.1 MB in the beginning and 130.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2722.70 ms. Allocated memory was 247.5 MB in the beginning and 362.8 MB in the end (delta: 115.3 MB). Free memory was 130.4 MB in the beginning and 290.2 MB in the end (delta: -159.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1763]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 256 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2680.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 27.4ms, AutomataDifference: 1919.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 259 SDtfs, 1622 SDslu, 42 SDs, 0 SdLazy, 1892 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1156.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 406.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.1ms SsaConstructionTime, 184.9ms SatisfiabilityAnalysisTime, 400.7ms InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 684 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...