/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 08:10:01,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 08:10:01,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 08:10:01,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 08:10:01,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 08:10:01,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 08:10:01,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 08:10:01,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 08:10:01,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 08:10:01,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 08:10:01,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 08:10:01,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 08:10:01,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 08:10:01,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 08:10:01,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 08:10:01,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 08:10:01,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 08:10:01,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 08:10:01,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 08:10:01,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 08:10:01,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 08:10:01,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 08:10:01,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 08:10:01,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 08:10:01,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 08:10:01,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 08:10:01,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 08:10:01,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 08:10:01,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 08:10:01,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 08:10:01,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 08:10:01,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 08:10:01,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 08:10:01,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 08:10:01,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 08:10:01,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 08:10:01,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 08:10:01,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 08:10:01,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 08:10:01,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 08:10:01,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 08:10:01,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 08:10:01,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 08:10:01,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 08:10:01,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 08:10:01,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 08:10:01,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 08:10:01,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 08:10:01,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 08:10:01,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 08:10:01,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 08:10:01,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 08:10:01,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 08:10:01,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 08:10:01,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 08:10:01,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 08:10:01,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 08:10:01,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 08:10:01,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 08:10:01,424 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 08:10:01,425 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 08:10:01,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 08:10:01,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 08:10:01,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 08:10:01,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 08:10:01,779 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 08:10:01,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound100.c [2021-04-16 08:10:01,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc3f5585/f42eab720f6b49a893aab0b98517b15d/FLAGa689bdaee [2021-04-16 08:10:02,372 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 08:10:02,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound100.c [2021-04-16 08:10:02,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc3f5585/f42eab720f6b49a893aab0b98517b15d/FLAGa689bdaee [2021-04-16 08:10:02,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc3f5585/f42eab720f6b49a893aab0b98517b15d [2021-04-16 08:10:02,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 08:10:02,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 08:10:02,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 08:10:02,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 08:10:02,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 08:10:02,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:10:02" (1/1) ... [2021-04-16 08:10:02,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9546cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:02, skipping insertion in model container [2021-04-16 08:10:02,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:10:02" (1/1) ... [2021-04-16 08:10:02,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 08:10:02,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 08:10:02,985 WARN L226 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/ps5-ll_valuebound100.c[458,471] [2021-04-16 08:10:02,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:10:03,007 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 08:10:03,028 WARN L226 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/ps5-ll_valuebound100.c[458,471] [2021-04-16 08:10:03,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:10:03,063 INFO L208 MainTranslator]: Completed translation [2021-04-16 08:10:03,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03 WrapperNode [2021-04-16 08:10:03,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 08:10:03,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 08:10:03,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 08:10:03,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 08:10:03,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (1/1) ... [2021-04-16 08:10:03,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 08:10:03,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 08:10:03,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 08:10:03,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 08:10:03,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (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 [2021-04-16 08:10:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 08:10:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 08:10:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 08:10:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 08:10:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 08:10:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 08:10:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 08:10:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 08:10:03,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 08:10:03,457 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 08:10:03,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:10:03 BoogieIcfgContainer [2021-04-16 08:10:03,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 08:10:03,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 08:10:03,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 08:10:03,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 08:10:03,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 08:10:02" (1/3) ... [2021-04-16 08:10:03,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2680a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:10:03, skipping insertion in model container [2021-04-16 08:10:03,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:03" (2/3) ... [2021-04-16 08:10:03,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2680a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:10:03, skipping insertion in model container [2021-04-16 08:10:03,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:10:03" (3/3) ... [2021-04-16 08:10:03,482 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound100.c [2021-04-16 08:10:03,488 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 08:10:03,507 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 08:10:03,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 08:10:03,570 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 08:10:03,571 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 08:10:03,571 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 08:10:03,571 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 08:10:03,571 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 08:10:03,571 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 08:10:03,571 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 08:10:03,571 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 08:10:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 08:10:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-04-16 08:10:03,598 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:03,598 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:03,599 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1098891495, now seen corresponding path program 1 times [2021-04-16 08:10:03,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:03,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851662924] [2021-04-16 08:10:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:03,682 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:03,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:10:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:03,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-04-16 08:10:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:03,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-04-16 08:10:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:03,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:03,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-04-16 08:10:03,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851662924] [2021-04-16 08:10:03,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:10:03,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 08:10:03,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089646623] [2021-04-16 08:10:03,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 08:10:03,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:10:03,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 08:10:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 08:10:03,960 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-04-16 08:10:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:10:04,053 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2021-04-16 08:10:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 08:10:04,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-04-16 08:10:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:10:04,063 INFO L225 Difference]: With dead ends: 51 [2021-04-16 08:10:04,063 INFO L226 Difference]: Without dead ends: 24 [2021-04-16 08:10:04,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 08:10:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-04-16 08:10:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-04-16 08:10:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-04-16 08:10:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-04-16 08:10:04,105 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2021-04-16 08:10:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:10:04,106 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-04-16 08:10:04,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-04-16 08:10:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-04-16 08:10:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-04-16 08:10:04,107 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:04,108 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:04,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 08:10:04,114 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash 769620075, now seen corresponding path program 1 times [2021-04-16 08:10:04,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:04,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957059043] [2021-04-16 08:10:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:04,123 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:04,137 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-04-16 08:10:04,137 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 08:10:04,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 08:10:04,153 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-04-16 08:10:04,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 08:10:04 BoogieIcfgContainer [2021-04-16 08:10:04,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 08:10:04,155 INFO L168 Benchmark]: Toolchain (without parser) took 1304.59 ms. Allocated memory is still 195.0 MB. Free memory was 160.7 MB in the beginning and 125.1 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:04,155 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 195.0 MB. Free memory was 177.7 MB in the beginning and 177.6 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 08:10:04,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.53 ms. Allocated memory is still 195.0 MB. Free memory was 160.5 MB in the beginning and 178.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:04,156 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 195.0 MB. Free memory was 178.1 MB in the beginning and 177.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 08:10:04,157 INFO L168 Benchmark]: RCFGBuilder took 350.19 ms. Allocated memory is still 195.0 MB. Free memory was 177.0 MB in the beginning and 162.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:04,158 INFO L168 Benchmark]: TraceAbstraction took 693.28 ms. Allocated memory is still 195.0 MB. Free memory was 161.8 MB in the beginning and 125.1 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:04,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 195.0 MB. Free memory was 177.7 MB in the beginning and 177.6 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 212.53 ms. Allocated memory is still 195.0 MB. Free memory was 160.5 MB in the beginning and 178.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 195.0 MB. Free memory was 178.1 MB in the beginning and 177.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 350.19 ms. Allocated memory is still 195.0 MB. Free memory was 177.0 MB in the beginning and 162.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 693.28 ms. Allocated memory is still 195.0 MB. Free memory was 161.8 MB in the beginning and 125.1 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] short k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_short() [L21] CALL assume_abort_if_not(k>=0 && k<=100) [L7] COND FALSE !(!cond) [L21] RET assume_abort_if_not(k>=0 && k<=100) [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 573.3ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 15.2ms, AutomataDifference: 118.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 8 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...