/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/fermat2-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:26:55,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:26:55,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:26:55,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:26:55,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:26:55,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:26:55,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:26:55,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:26:55,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:26:55,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:26:55,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:26:55,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:26:55,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:26:55,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:26:55,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:26:55,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:26:55,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:26:55,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:26:55,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:26:55,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:26:55,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:26:55,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:26:55,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:26:55,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:26:55,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:26:55,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:26:55,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:26:55,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:26:55,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:26:55,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:26:55,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:26:55,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:26:55,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:26:55,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:26:55,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:26:55,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:26:55,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:26:55,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:26:55,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:26:55,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:26:55,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:26:55,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:26:55,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:26:55,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:26:55,347 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:26:55,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:26:55,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:26:55,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:26:55,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:26:55,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:26:55,691 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:26:55,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound10.c [2021-05-06 08:26:55,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ffa0bcb/a7524820d2da4219b3723431c8d16781/FLAG1c54e7940 [2021-05-06 08:26:56,068 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:26:56,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound10.c [2021-05-06 08:26:56,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ffa0bcb/a7524820d2da4219b3723431c8d16781/FLAG1c54e7940 [2021-05-06 08:26:56,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83ffa0bcb/a7524820d2da4219b3723431c8d16781 [2021-05-06 08:26:56,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:26:56,084 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:26:56,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:26:56,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:26:56,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:26:56,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fa9359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56, skipping insertion in model container [2021-05-06 08:26:56,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:26:56,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:26:56,175 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/fermat2-ll_valuebound10.c[524,537] [2021-05-06 08:26:56,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:26:56,205 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:26:56,243 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/fermat2-ll_valuebound10.c[524,537] [2021-05-06 08:26:56,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:26:56,285 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:26:56,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56 WrapperNode [2021-05-06 08:26:56,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:26:56,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:26:56,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:26:56,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:26:56,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:26:56,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:26:56,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:26:56,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:26:56,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (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 08:26:56,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:26:56,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:26:56,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:26:56,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:26:56,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:26:56,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:26:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:26:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:26:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:26:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:26:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:26:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:26:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:26:56,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:26:56,689 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:26:56,689 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 08:26:56,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:26:56 BoogieIcfgContainer [2021-05-06 08:26:56,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:26:56,690 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:26:56,691 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:26:56,691 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:26:56,693 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:26:56" (1/1) ... [2021-05-06 08:26:56,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:26:56 BasicIcfg [2021-05-06 08:26:56,702 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:26:56,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:26:56,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:26:56,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:26:56,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:26:56" (1/4) ... [2021-05-06 08:26:56,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5bfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:26:56, skipping insertion in model container [2021-05-06 08:26:56,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:26:56" (2/4) ... [2021-05-06 08:26:56,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5bfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:26:56, skipping insertion in model container [2021-05-06 08:26:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:26:56" (3/4) ... [2021-05-06 08:26:56,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5bfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:26:56, skipping insertion in model container [2021-05-06 08:26:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:26:56" (4/4) ... [2021-05-06 08:26:56,706 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound10.cJordan [2021-05-06 08:26:56,710 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:26:56,712 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:26:56,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:26:56,754 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:26:56,754 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:26:56,754 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:26:56,754 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:26:56,754 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:26:56,754 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:26:56,754 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:26:56,754 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:26:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 08:26:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 08:26:56,782 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:26:56,782 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 08:26:56,783 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:26:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:26:56,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1450325676, now seen corresponding path program 1 times [2021-05-06 08:26:56,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:26:56,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965216974] [2021-05-06 08:26:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:26:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:26:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 08:26:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 08:26:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 08:26:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 08:26:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,080 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 08:26:57,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:26:57,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965216974] [2021-05-06 08:26:57,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965216974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:26:57,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:26:57,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 08:26:57,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109639972] [2021-05-06 08:26:57,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 08:26:57,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:26:57,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 08:26:57,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:26:57,099 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 08:26:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:26:57,190 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-05-06 08:26:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 08:26:57,192 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 08:26:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:26:57,197 INFO L225 Difference]: With dead ends: 32 [2021-05-06 08:26:57,197 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 08:26:57,198 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:26:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 08:26:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 08:26:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 08:26:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-05-06 08:26:57,218 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2021-05-06 08:26:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:26:57,219 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-05-06 08:26:57,219 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 08:26:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-05-06 08:26:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 08:26:57,220 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:26:57,220 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 08:26:57,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 08:26:57,220 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:26:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:26:57,221 INFO L82 PathProgramCache]: Analyzing trace with hash 512475503, now seen corresponding path program 1 times [2021-05-06 08:26:57,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:26:57,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263608768] [2021-05-06 08:26:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:26:57,232 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:26:57,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652106739] [2021-05-06 08:26:57,233 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 08:26:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:57,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 08:26:57,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:26:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:57,581 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 08:26:57,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:26:57,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263608768] [2021-05-06 08:26:57,582 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:26:57,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652106739] [2021-05-06 08:26:57,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652106739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:26:57,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:26:57,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 08:26:57,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85681211] [2021-05-06 08:26:57,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 08:26:57,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:26:57,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 08:26:57,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 08:26:57,584 INFO L87 Difference]: Start difference. First operand 27 states and 32 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 08:26:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:26:58,267 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-05-06 08:26:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 08:26:58,268 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 08:26:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:26:58,268 INFO L225 Difference]: With dead ends: 36 [2021-05-06 08:26:58,268 INFO L226 Difference]: Without dead ends: 36 [2021-05-06 08:26:58,269 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:26:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-06 08:26:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-05-06 08:26:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 08:26:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-05-06 08:26:58,273 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 33 [2021-05-06 08:26:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:26:58,274 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-05-06 08:26:58,274 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 08:26:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-05-06 08:26:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 08:26:58,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:26:58,275 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 08:26:58,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 08:26:58,481 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:26:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:26:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash -397056057, now seen corresponding path program 1 times [2021-05-06 08:26:58,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:26:58,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47521307] [2021-05-06 08:26:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:26:58,491 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:26:58,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751012492] [2021-05-06 08:26:58,491 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 08:26:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:26:58,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 08:26:58,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:26:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:58,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:58,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:58,746 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 08:26:58,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:26:58,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47521307] [2021-05-06 08:26:58,746 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:26:58,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751012492] [2021-05-06 08:26:58,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751012492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:26:58,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:26:58,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 08:26:58,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18564857] [2021-05-06 08:26:58,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 08:26:58,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:26:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 08:26:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 08:26:58,748 INFO L87 Difference]: Start difference. First operand 35 states and 42 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 08:26:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:26:58,850 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-05-06 08:26:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 08:26:58,850 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 08:26:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:26:58,851 INFO L225 Difference]: With dead ends: 33 [2021-05-06 08:26:58,851 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 08:26:58,851 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 08:26:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 08:26:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 08:26:58,851 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 08:26:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 08:26:58,852 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-06 08:26:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:26:58,852 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 08:26:58,852 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 08:26:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 08:26:58,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 08:26:59,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:26:59,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:26:59 BasicIcfg [2021-05-06 08:26:59,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:26:59,073 INFO L168 Benchmark]: Toolchain (without parser) took 2989.12 ms. Allocated memory was 177.2 MB in the beginning and 238.0 MB in the end (delta: 60.8 MB). Free memory was 141.8 MB in the beginning and 194.1 MB in the end (delta: -52.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:59,073 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 177.2 MB. Free memory is still 158.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:26:59,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.35 ms. Allocated memory is still 177.2 MB. Free memory was 141.6 MB in the beginning and 158.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:59,073 INFO L168 Benchmark]: Boogie Preprocessor took 45.64 ms. Allocated memory is still 177.2 MB. Free memory was 158.9 MB in the beginning and 157.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:59,073 INFO L168 Benchmark]: RCFGBuilder took 343.13 ms. Allocated memory is still 177.2 MB. Free memory was 157.3 MB in the beginning and 142.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:59,073 INFO L168 Benchmark]: IcfgTransformer took 11.58 ms. Allocated memory is still 177.2 MB. Free memory was 142.1 MB in the beginning and 141.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:59,073 INFO L168 Benchmark]: TraceAbstraction took 2369.45 ms. Allocated memory was 177.2 MB in the beginning and 238.0 MB in the end (delta: 60.8 MB). Free memory was 140.5 MB in the beginning and 194.1 MB in the end (delta: -53.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:59,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 177.2 MB. Free memory is still 158.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 202.35 ms. Allocated memory is still 177.2 MB. Free memory was 141.6 MB in the beginning and 158.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.64 ms. Allocated memory is still 177.2 MB. Free memory was 158.9 MB in the beginning and 157.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 343.13 ms. Allocated memory is still 177.2 MB. Free memory was 157.3 MB in the beginning and 142.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 11.58 ms. Allocated memory is still 177.2 MB. Free memory was 142.1 MB in the beginning and 141.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2369.45 ms. Allocated memory was 177.2 MB in the beginning and 238.0 MB in the end (delta: 60.8 MB). Free memory was 140.5 MB in the beginning and 194.1 MB in the end (delta: -53.6 MB). Peak memory consumption was 6.6 MB. 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, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2317.3ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 23.9ms, AutomataDifference: 898.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 79 SDtfs, 35 SDslu, 200 SDs, 0 SdLazy, 79 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 781.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 184.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 17.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 104.0ms SatisfiabilityAnalysisTime, 547.6ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 5 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 23 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...