/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/geo3-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:23:47,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:23:47,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:23:47,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 08:23:47,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 08:23:47,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 08:23:47,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 08:23:47,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 08:23:47,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 08:23:47,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 08:23:47,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 08:23:47,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 08:23:47,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:23:47,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:23:47,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:23:47,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:23:47,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:23:47,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:23:47,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:23:47,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:23:47,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:23:47,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:23:47,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:23:47,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:23:47,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 08:23:47,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 08:23:47,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 08:23:47,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 08:23:47,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 08:23:47,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 08:23:47,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:23:47,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:23:47,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:23:47,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:23:47,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:23:47,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:23:47,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:23:47,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:23:47,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:23:47,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:23:47,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:23:47,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:23:47,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:23:47,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:23:47,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:23:47,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:23:47,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:23:47,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:23:47,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:23:47,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:23:47,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:23:47,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:23:47,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:23:47,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:23:47,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:23:47,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:23:47,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:23:47,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:23:47,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:23:47,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:23:47,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:23:47,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:23:47,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:23:47,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:23:47,299 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:23:47,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:23:47,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:23:47,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:23:47,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:23:47,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:23:47,622 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:23:47,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c [2021-05-01 08:23:47,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a465d014/8e3094f2485645f68d00669c8abbd39c/FLAG4379501c9 [2021-05-01 08:23:48,129 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:23:48,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound1.c [2021-05-01 08:23:48,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a465d014/8e3094f2485645f68d00669c8abbd39c/FLAG4379501c9 [2021-05-01 08:23:48,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a465d014/8e3094f2485645f68d00669c8abbd39c [2021-05-01 08:23:48,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:23:48,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:23:48,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:23:48,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:23:48,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:23:48,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c50b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48, skipping insertion in model container [2021-05-01 08:23:48,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:23:48,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:23:48,337 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/geo3-ll_valuebound1.c[525,538] [2021-05-01 08:23:48,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:23:48,366 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:23:48,380 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/geo3-ll_valuebound1.c[525,538] [2021-05-01 08:23:48,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:23:48,410 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:23:48,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48 WrapperNode [2021-05-01 08:23:48,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:23:48,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:23:48,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:23:48,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:23:48,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (1/1) ... [2021-05-01 08:23:48,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:23:48,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:23:48,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:23:48,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:23:48,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (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 [2021-05-01 08:23:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:23:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:23:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:23:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:23:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:23:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:23:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:23:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:23:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:23:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:23:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:23:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:23:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:23:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:23:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:23:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:23:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:23:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:23:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:23:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:23:48,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:23:48,797 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:23:48,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:48 BoogieIcfgContainer [2021-05-01 08:23:48,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:23:48,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:23:48,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:23:48,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:23:48,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:23:48" (1/3) ... [2021-05-01 08:23:48,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118866f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:48, skipping insertion in model container [2021-05-01 08:23:48,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:48" (2/3) ... [2021-05-01 08:23:48,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118866f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:48, skipping insertion in model container [2021-05-01 08:23:48,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:48" (3/3) ... [2021-05-01 08:23:48,805 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound1.c [2021-05-01 08:23:48,810 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:23:48,813 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:23:48,829 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:23:48,845 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:23:48,845 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:23:48,845 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:23:48,846 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:23:48,846 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:23:48,846 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:23:48,846 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:23:48,846 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:23:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-05-01 08:23:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 08:23:48,864 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:23:48,865 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:23:48,865 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:23:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:23:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash -779299010, now seen corresponding path program 1 times [2021-05-01 08:23:48,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:23:48,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588175234] [2021-05-01 08:23:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:23:48,925 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:23:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:49,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:23:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:49,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:23:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:49,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-01 08:23:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:49,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 08:23:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:49,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-01 08:23:49,173 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:23:49,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588175234] [2021-05-01 08:23:49,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [588175234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:23:49,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:23:49,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:23:49,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595592906] [2021-05-01 08:23:49,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:23:49,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:23:49,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:23:49,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:23:49,192 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-01 08:23:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:23:49,278 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-05-01 08:23:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:23:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-01 08:23:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:23:49,286 INFO L225 Difference]: With dead ends: 55 [2021-05-01 08:23:49,287 INFO L226 Difference]: Without dead ends: 26 [2021-05-01 08:23:49,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:23:49,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-01 08:23:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-01 08:23:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-05-01 08:23:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-05-01 08:23:49,335 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2021-05-01 08:23:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:23:49,336 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-05-01 08:23:49,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-01 08:23:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-05-01 08:23:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 08:23:49,338 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:23:49,338 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:23:49,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:23:49,338 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:23:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:23:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash -963850242, now seen corresponding path program 1 times [2021-05-01 08:23:49,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:23:49,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273321928] [2021-05-01 08:23:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:23:49,342 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:23:49,359 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:23:49,359 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:23:49,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:23:49,393 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:23:49,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:23:49 BoogieIcfgContainer [2021-05-01 08:23:49,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:23:49,395 INFO L168 Benchmark]: Toolchain (without parser) took 1230.68 ms. Allocated memory is still 224.4 MB. Free memory was 189.8 MB in the beginning and 202.0 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:23:49,396 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 224.4 MB. Free memory is still 206.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:23:49,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.76 ms. Allocated memory is still 224.4 MB. Free memory was 189.6 MB in the beginning and 179.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:49,396 INFO L168 Benchmark]: Boogie Preprocessor took 96.72 ms. Allocated memory is still 224.4 MB. Free memory was 179.8 MB in the beginning and 207.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:49,397 INFO L168 Benchmark]: RCFGBuilder took 288.35 ms. Allocated memory is still 224.4 MB. Free memory was 207.5 MB in the beginning and 192.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:49,397 INFO L168 Benchmark]: TraceAbstraction took 593.97 ms. Allocated memory is still 224.4 MB. Free memory was 192.2 MB in the beginning and 202.0 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:23:49,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 224.4 MB. Free memory is still 206.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.76 ms. Allocated memory is still 224.4 MB. Free memory was 189.6 MB in the beginning and 179.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 96.72 ms. Allocated memory is still 224.4 MB. Free memory was 179.8 MB in the beginning and 207.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 288.35 ms. Allocated memory is still 224.4 MB. Free memory was 207.5 MB in the beginning and 192.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 593.97 ms. Allocated memory is still 224.4 MB. Free memory was 192.2 MB in the beginning and 202.0 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L22] int z, a, k; [L23] long long x, y, c, az; [L24] z = __VERIFIER_nondet_int() [L25] CALL assume_abort_if_not(z>=0 && z<=1) [L12] COND FALSE !(!cond) [L25] RET assume_abort_if_not(z>=0 && z<=1) [L26] a = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(a>=0 && a<=1) [L12] COND FALSE !(!cond) [L27] RET assume_abort_if_not(a>=0 && a<=1) [L28] k = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(k>=0 && k<=1) [L12] COND FALSE !(!cond) [L29] RET assume_abort_if_not(k>=0 && k<=1) [L31] x = a [L32] y = 1 [L33] c = 1 [L34] az = (long long) a * z [L36] COND TRUE 1 [L37] CALL __VERIFIER_assert(z*x - x + a - az*y == 0) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 520.5ms, OverallIterations: 2, TraceHistogramMax: 3, EmptinessCheckTime: 11.1ms, AutomataDifference: 108.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 3 SDs, 0 SdLazy, 8 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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: 33.7ms 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...