/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/geo1-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:28:15,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:28:15,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:28:15,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:28:15,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:28:15,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:28:15,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:28:15,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:28:15,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:28:15,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:28:15,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:28:15,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:28:15,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:28:15,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:28:15,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:28:15,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:28:15,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:28:15,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:28:15,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:28:15,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:28:15,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:28:15,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:28:15,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:28:15,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:28:15,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:28:15,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:28:15,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:28:15,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:28:15,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:28:15,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:28:15,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:28:15,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:28:15,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:28:15,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:28:15,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:28:15,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:28:15,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:28:15,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:28:15,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:28:15,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:28:15,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:28:15,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:28:15,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:28:15,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:28:15,419 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:28:15,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:28:15,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:28:15,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:28:15,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:28:15,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:28:15,757 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:28:15,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound20.c [2021-05-06 08:28:15,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce67af9ef/9061a0feb0924f43b9006b18ce088f5c/FLAG85f97b664 [2021-05-06 08:28:16,272 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:28:16,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound20.c [2021-05-06 08:28:16,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce67af9ef/9061a0feb0924f43b9006b18ce088f5c/FLAG85f97b664 [2021-05-06 08:28:16,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce67af9ef/9061a0feb0924f43b9006b18ce088f5c [2021-05-06 08:28:16,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:28:16,682 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:28:16,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:28:16,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:28:16,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:28:16,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef0928c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16, skipping insertion in model container [2021-05-06 08:28:16,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:28:16,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:28:16,824 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/geo1-ll_valuebound20.c[546,559] [2021-05-06 08:28:16,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:28:16,846 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:28:16,867 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/geo1-ll_valuebound20.c[546,559] [2021-05-06 08:28:16,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:28:16,908 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:28:16,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16 WrapperNode [2021-05-06 08:28:16,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:28:16,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:28:16,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:28:16,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:28:16,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (1/1) ... [2021-05-06 08:28:16,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:28:16,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:28:16,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:28:16,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:28:16,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (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 08:28:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:28:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:28:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:28:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:28:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:28:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:28:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:28:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:28:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:28:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:28:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 08:28:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:28:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:28:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:28:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:28:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:28:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:28:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:28:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:28:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:28:17,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:28:17,306 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 08:28:17,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:28:17 BoogieIcfgContainer [2021-05-06 08:28:17,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:28:17,308 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:28:17,309 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:28:17,317 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:28:17,319 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:28:17" (1/1) ... [2021-05-06 08:28:17,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:28:17 BasicIcfg [2021-05-06 08:28:17,337 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:28:17,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:28:17,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:28:17,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:28:17,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:28:16" (1/4) ... [2021-05-06 08:28:17,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0cdbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:28:17, skipping insertion in model container [2021-05-06 08:28:17,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:28:16" (2/4) ... [2021-05-06 08:28:17,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0cdbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:28:17, skipping insertion in model container [2021-05-06 08:28:17,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:28:17" (3/4) ... [2021-05-06 08:28:17,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0cdbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:28:17, skipping insertion in model container [2021-05-06 08:28:17,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:28:17" (4/4) ... [2021-05-06 08:28:17,345 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound20.cJordan [2021-05-06 08:28:17,350 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:28:17,354 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:28:17,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:28:17,393 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:28:17,393 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:28:17,394 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:28:17,394 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:28:17,394 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:28:17,394 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:28:17,394 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:28:17,394 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:28:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 08:28:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 08:28:17,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:28:17,420 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 08:28:17,420 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:28:17,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:28:17,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2021-05-06 08:28:17,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:28:17,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135153689] [2021-05-06 08:28:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:28:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:28:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 08:28:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 08:28:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 08:28:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 08:28:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,728 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 08:28:17,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:28:17,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135153689] [2021-05-06 08:28:17,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135153689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:28:17,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:28:17,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 08:28:17,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461071781] [2021-05-06 08:28:17,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 08:28:17,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:28:17,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 08:28:17,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:28:17,747 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 08:28:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:28:17,843 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-06 08:28:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 08:28:17,845 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 08:28:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:28:17,851 INFO L225 Difference]: With dead ends: 32 [2021-05-06 08:28:17,851 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 08:28:17,852 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:28:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 08:28:17,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 08:28:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 08:28:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-06 08:28:17,881 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-05-06 08:28:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:28:17,882 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-06 08:28:17,882 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 08:28:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-06 08:28:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 08:28:17,883 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:28:17,883 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 08:28:17,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 08:28:17,884 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:28:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:28:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2021-05-06 08:28:17,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:28:17,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152298399] [2021-05-06 08:28:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:28:17,902 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:28:17,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162687439] [2021-05-06 08:28:17,903 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 08:28:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:17,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 08:28:17,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:28:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,157 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 08:28:18,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:28:18,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152298399] [2021-05-06 08:28:18,158 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:28:18,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162687439] [2021-05-06 08:28:18,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162687439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:28:18,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:28:18,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 08:28:18,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352631027] [2021-05-06 08:28:18,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 08:28:18,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:28:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 08:28:18,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 08:28:18,163 INFO L87 Difference]: Start difference. First operand 27 states and 31 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 08:28:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:28:18,232 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-05-06 08:28:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 08:28:18,237 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 08:28:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:28:18,238 INFO L225 Difference]: With dead ends: 35 [2021-05-06 08:28:18,238 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 08:28:18,239 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:28:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 08:28:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-06 08:28:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 08:28:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-06 08:28:18,245 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2021-05-06 08:28:18,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:28:18,246 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-06 08:28:18,246 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 08:28:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-06 08:28:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-06 08:28:18,247 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:28:18,247 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, 1] [2021-05-06 08:28:18,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 08:28:18,475 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:28:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:28:18,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2021-05-06 08:28:18,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:28:18,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072584190] [2021-05-06 08:28:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:28:18,495 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:28:18,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437925101] [2021-05-06 08:28:18,495 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 08:28:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:28:18,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 08:28:18,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:28:18,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:28:18,786 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 08:28:18,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:28:18,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072584190] [2021-05-06 08:28:18,787 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:28:18,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437925101] [2021-05-06 08:28:18,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437925101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:28:18,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:28:18,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 08:28:18,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436834340] [2021-05-06 08:28:18,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 08:28:18,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:28:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 08:28:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 08:28:18,790 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 08:28:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:28:19,040 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-06 08:28:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 08:28:19,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 40 [2021-05-06 08:28:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:28:19,041 INFO L225 Difference]: With dead ends: 31 [2021-05-06 08:28:19,041 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 08:28:19,041 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-06 08:28:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 08:28:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 08:28:19,042 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 08:28:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 08:28:19,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-06 08:28:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:28:19,042 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 08:28:19,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 08:28:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 08:28:19,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 08:28:19,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:28:19,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:28:19 BasicIcfg [2021-05-06 08:28:19,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:28:19,252 INFO L168 Benchmark]: Toolchain (without parser) took 2569.80 ms. Allocated memory is still 182.5 MB. Free memory was 147.6 MB in the beginning and 95.3 MB in the end (delta: 52.3 MB). Peak memory consumption was 53.2 MB. Max. memory is 8.0 GB. [2021-05-06 08:28:19,252 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 182.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:28:19,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.77 ms. Allocated memory is still 182.5 MB. Free memory was 147.4 MB in the beginning and 165.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-06 08:28:19,252 INFO L168 Benchmark]: Boogie Preprocessor took 24.81 ms. Allocated memory is still 182.5 MB. Free memory was 165.9 MB in the beginning and 164.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:28:19,253 INFO L168 Benchmark]: RCFGBuilder took 372.97 ms. Allocated memory is still 182.5 MB. Free memory was 164.5 MB in the beginning and 149.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 08:28:19,253 INFO L168 Benchmark]: IcfgTransformer took 28.26 ms. Allocated memory is still 182.5 MB. Free memory was 149.8 MB in the beginning and 148.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 08:28:19,253 INFO L168 Benchmark]: TraceAbstraction took 1913.06 ms. Allocated memory is still 182.5 MB. Free memory was 148.1 MB in the beginning and 95.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:28:19,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 182.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 211.77 ms. Allocated memory is still 182.5 MB. Free memory was 147.4 MB in the beginning and 165.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.81 ms. Allocated memory is still 182.5 MB. Free memory was 165.9 MB in the beginning and 164.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 372.97 ms. Allocated memory is still 182.5 MB. Free memory was 164.5 MB in the beginning and 149.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 28.26 ms. Allocated memory is still 182.5 MB. Free memory was 149.8 MB in the beginning and 148.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1913.06 ms. Allocated memory is still 182.5 MB. Free memory was 148.1 MB in the beginning and 95.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1856.0ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 17.5ms, AutomataDifference: 447.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 80 SDtfs, 32 SDslu, 187 SDs, 0 SdLazy, 57 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 311.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 154.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 23.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.9ms SsaConstructionTime, 83.5ms SatisfiabilityAnalysisTime, 580.7ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 194 SizeOfPredicates, 4 NumberOfNonLiveVariables, 278 ConjunctsInSsa, 17 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...