/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/nla-digbench-scaling/fermat1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:25:34,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:25:34,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:25:34,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:25:34,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:25:34,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:25:34,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:25:34,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:25:34,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:25:34,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:25:34,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:25:34,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:25:34,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:25:34,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:25:34,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:25:34,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:25:34,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:25:34,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:25:34,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:25:34,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:25:34,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:25:34,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:25:34,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:25:34,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:25:34,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:25:34,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:25:34,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:25:34,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:25:34,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:25:34,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:25:34,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:25:34,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:25:34,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:25:34,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:25:34,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:25:34,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:25:34,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:25:34,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:25:34,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:25:34,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:25:34,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:25:34,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:25:34,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:25:34,122 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:25:34,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:25:34,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:25:34,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:25:34,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:25:34,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:25:34,419 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:25:34,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-06 08:25:34,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b4b3672c/c52c0ac3199e42fdbaafa59b14d73ca5/FLAGa1ffa2b98 [2021-05-06 08:25:34,756 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:25:34,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-06 08:25:34,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b4b3672c/c52c0ac3199e42fdbaafa59b14d73ca5/FLAGa1ffa2b98 [2021-05-06 08:25:34,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b4b3672c/c52c0ac3199e42fdbaafa59b14d73ca5 [2021-05-06 08:25:34,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:25:34,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:25:34,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:25:34,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:25:34,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:25:34,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:25:34" (1/1) ... [2021-05-06 08:25:34,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0a3e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:34, skipping insertion in model container [2021-05-06 08:25:34,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:25:34" (1/1) ... [2021-05-06 08:25:34,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:25:34,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:25:34,945 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2021-05-06 08:25:34,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:25:34,974 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:25:34,989 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2021-05-06 08:25:35,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:25:35,015 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:25:35,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35 WrapperNode [2021-05-06 08:25:35,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:25:35,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:25:35,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:25:35,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:25:35,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:25:35,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:25:35,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:25:35,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:25:35,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (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 08:25:35,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:25:35,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:25:35,204 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:25:35,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:25:35,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:25:35,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:25:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:25:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:25:35,205 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:25:35,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:25:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:25:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:25:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:25:35,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:25:35,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:25:35,438 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 08:25:35,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:25:35 BoogieIcfgContainer [2021-05-06 08:25:35,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:25:35,439 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:25:35,439 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:25:35,440 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:25:35,442 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:25:35" (1/1) ... [2021-05-06 08:25:35,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:25:35 BasicIcfg [2021-05-06 08:25:35,451 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:25:35,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:25:35,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:25:35,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:25:35,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:25:34" (1/4) ... [2021-05-06 08:25:35,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e537da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:25:35, skipping insertion in model container [2021-05-06 08:25:35,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:35" (2/4) ... [2021-05-06 08:25:35,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e537da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:25:35, skipping insertion in model container [2021-05-06 08:25:35,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:25:35" (3/4) ... [2021-05-06 08:25:35,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e537da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:25:35, skipping insertion in model container [2021-05-06 08:25:35,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:25:35" (4/4) ... [2021-05-06 08:25:35,456 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.cJordan [2021-05-06 08:25:35,460 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:25:35,462 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:25:35,473 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:25:35,487 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:25:35,487 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:25:35,487 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:25:35,487 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:25:35,487 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:25:35,487 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:25:35,487 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:25:35,487 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:25:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 08:25:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 08:25:35,500 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:35,501 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:35,501 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1042421720, now seen corresponding path program 1 times [2021-05-06 08:25:35,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:35,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866117963] [2021-05-06 08:25:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:25:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 08:25:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 08:25:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 08:25:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 08:25:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 08:25:35,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:35,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866117963] [2021-05-06 08:25:35,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866117963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:25:35,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:25:35,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 08:25:35,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799209295] [2021-05-06 08:25:35,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 08:25:35,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:35,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 08:25:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:25:35,675 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 08:25:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:35,767 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-05-06 08:25:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 08:25:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-06 08:25:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:35,773 INFO L225 Difference]: With dead ends: 37 [2021-05-06 08:25:35,773 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 08:25:35,774 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:25:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 08:25:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-06 08:25:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 08:25:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-05-06 08:25:35,796 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2021-05-06 08:25:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:35,796 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-05-06 08:25:35,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 08:25:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-05-06 08:25:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 08:25:35,797 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:35,806 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:35,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 08:25:35,807 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 104571547, now seen corresponding path program 1 times [2021-05-06 08:25:35,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:35,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637851900] [2021-05-06 08:25:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:35,848 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:35,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905588854] [2021-05-06 08:25:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:35,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 08:25:36,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:36,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:36,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:36,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 08:25:36,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:36,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637851900] [2021-05-06 08:25:36,138 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:36,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905588854] [2021-05-06 08:25:36,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905588854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:25:36,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:25:36,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 08:25:36,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917458753] [2021-05-06 08:25:36,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 08:25:36,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:36,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 08:25:36,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 08:25:36,140 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-06 08:25:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:42,579 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-05-06 08:25:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 08:25:42,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2021-05-06 08:25:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:42,584 INFO L225 Difference]: With dead ends: 46 [2021-05-06 08:25:42,585 INFO L226 Difference]: Without dead ends: 46 [2021-05-06 08:25:42,585 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:25:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-06 08:25:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-06 08:25:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 08:25:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-05-06 08:25:42,591 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2021-05-06 08:25:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:42,591 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-05-06 08:25:42,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-06 08:25:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-05-06 08:25:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 08:25:42,592 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:42,602 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 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 08:25:42,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 08:25:42,803 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:42,803 INFO L82 PathProgramCache]: Analyzing trace with hash -844389750, now seen corresponding path program 1 times [2021-05-06 08:25:42,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:42,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655435036] [2021-05-06 08:25:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:42,813 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:42,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189599691] [2021-05-06 08:25:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:42,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 08:25:42,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 08:25:42,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:42,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655435036] [2021-05-06 08:25:42,963 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:42,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189599691] [2021-05-06 08:25:42,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189599691] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:42,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:42,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 08:25:42,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108870323] [2021-05-06 08:25:42,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 08:25:42,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:42,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 08:25:42,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 08:25:42,964 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-06 08:25:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:43,099 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-05-06 08:25:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 08:25:43,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2021-05-06 08:25:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:43,100 INFO L225 Difference]: With dead ends: 43 [2021-05-06 08:25:43,100 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 08:25:43,100 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 08:25:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 08:25:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 08:25:43,101 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 08:25:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 08:25:43,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-06 08:25:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:43,101 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 08:25:43,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-06 08:25:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 08:25:43,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 08:25:43,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:43,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:25:43 BasicIcfg [2021-05-06 08:25:43,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:25:43,323 INFO L168 Benchmark]: Toolchain (without parser) took 8539.27 ms. Allocated memory was 176.2 MB in the beginning and 211.8 MB in the end (delta: 35.7 MB). Free memory was 142.4 MB in the beginning and 182.3 MB in the end (delta: -40.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:25:43,323 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 176.2 MB. Free memory is still 158.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:25:43,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.01 ms. Allocated memory is still 176.2 MB. Free memory was 142.2 MB in the beginning and 132.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-06 08:25:43,324 INFO L168 Benchmark]: Boogie Preprocessor took 67.71 ms. Allocated memory is still 176.2 MB. Free memory was 132.2 MB in the beginning and 159.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 08:25:43,324 INFO L168 Benchmark]: RCFGBuilder took 354.56 ms. Allocated memory is still 176.2 MB. Free memory was 159.3 MB in the beginning and 143.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 08:25:43,324 INFO L168 Benchmark]: IcfgTransformer took 12.07 ms. Allocated memory is still 176.2 MB. Free memory was 143.0 MB in the beginning and 142.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:25:43,324 INFO L168 Benchmark]: TraceAbstraction took 7869.91 ms. Allocated memory was 176.2 MB in the beginning and 211.8 MB in the end (delta: 35.7 MB). Free memory was 141.5 MB in the beginning and 182.3 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:25:43,325 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 176.2 MB. Free memory is still 158.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 231.01 ms. Allocated memory is still 176.2 MB. Free memory was 142.2 MB in the beginning and 132.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.71 ms. Allocated memory is still 176.2 MB. Free memory was 132.2 MB in the beginning and 159.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 354.56 ms. Allocated memory is still 176.2 MB. Free memory was 159.3 MB in the beginning and 143.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 12.07 ms. Allocated memory is still 176.2 MB. Free memory was 143.0 MB in the beginning and 142.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7869.91 ms. Allocated memory was 176.2 MB in the beginning and 211.8 MB in the end (delta: 35.7 MB). Free memory was 141.5 MB in the beginning and 182.3 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7833.4ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 9.0ms, AutomataDifference: 6689.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 96 SDtfs, 47 SDslu, 234 SDs, 0 SdLazy, 119 SolverSat, 18 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6544.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 133.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.8ms SsaConstructionTime, 75.6ms SatisfiabilityAnalysisTime, 331.4ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 5 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 73/74 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...