/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:08,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:08,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:08,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:08,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:08,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:08,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:08,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:08,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:08,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:08,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:08,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:08,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:08,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:08,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:08,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:08,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:08,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:08,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:08,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:08,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:08,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:08,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:08,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:08,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:08,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:08,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:08,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:08,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:08,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:08,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:08,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:08,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:08,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:08,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:08,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:08,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:08,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:08,766 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:08,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:08,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:08,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:08,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:08,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:08,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:08,770 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:08,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:09,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:09,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:09,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:09,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:09,223 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:09,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2021-02-24 04:46:09,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba204004b/7784eaabda0f4ceabbceb2e0159d355e/FLAGee310c486 [2021-02-24 04:46:09,912 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:09,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2021-02-24 04:46:09,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba204004b/7784eaabda0f4ceabbceb2e0159d355e/FLAGee310c486 [2021-02-24 04:46:10,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba204004b/7784eaabda0f4ceabbceb2e0159d355e [2021-02-24 04:46:10,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:10,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:10,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:10,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:10,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:10,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162b119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10, skipping insertion in model container [2021-02-24 04:46:10,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:10,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:10,477 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i[805,818] [2021-02-24 04:46:10,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:10,516 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:10,528 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i[805,818] [2021-02-24 04:46:10,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:10,555 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:10,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10 WrapperNode [2021-02-24 04:46:10,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:10,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:10,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:10,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:10,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:10,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:10,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:10,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:10,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (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 [2021-02-24 04:46:10,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2021-02-24 04:46:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:46:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_pointer [2021-02-24 04:46:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-24 04:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:46:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:11,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:11,199 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 04:46:11,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:11 BoogieIcfgContainer [2021-02-24 04:46:11,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:11,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:11,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:11,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:10" (1/3) ... [2021-02-24 04:46:11,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df77a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:11, skipping insertion in model container [2021-02-24 04:46:11,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (2/3) ... [2021-02-24 04:46:11,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df77a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:11, skipping insertion in model container [2021-02-24 04:46:11,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:11" (3/3) ... [2021-02-24 04:46:11,215 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2021-02-24 04:46:11,225 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:11,231 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:11,255 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:11,282 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:11,283 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:11,283 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:11,283 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:11,283 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:11,283 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:11,283 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:11,284 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-24 04:46:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-24 04:46:11,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:11,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:11,341 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:11,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:11,348 INFO L82 PathProgramCache]: Analyzing trace with hash -351077520, now seen corresponding path program 1 times [2021-02-24 04:46:11,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:11,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178736829] [2021-02-24 04:46:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:11,429 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:11,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:46:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:11,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178736829] [2021-02-24 04:46:11,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:11,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:11,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316087798] [2021-02-24 04:46:11,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:11,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:11,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:11,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:11,840 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 5 states. [2021-02-24 04:46:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:12,138 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2021-02-24 04:46:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:46:12,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-02-24 04:46:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:12,153 INFO L225 Difference]: With dead ends: 114 [2021-02-24 04:46:12,153 INFO L226 Difference]: Without dead ends: 72 [2021-02-24 04:46:12,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-24 04:46:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2021-02-24 04:46:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-24 04:46:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-02-24 04:46:12,218 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 33 [2021-02-24 04:46:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:12,219 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-02-24 04:46:12,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-02-24 04:46:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-24 04:46:12,222 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:12,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:12,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:12,223 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:12,224 INFO L82 PathProgramCache]: Analyzing trace with hash -878173048, now seen corresponding path program 1 times [2021-02-24 04:46:12,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:12,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794793459] [2021-02-24 04:46:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:12,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 04:46:12,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 04:46:12,298 WARN L141 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size [2021-02-24 04:46:12,315 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 04:46:12,322 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 04:46:12,338 WARN L147 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size 28 [2021-02-24 04:46:12,346 WARN L141 QuantifierPusher]: treesize reduction 23, result has 66.2 percent of original size [2021-02-24 04:46:12,350 WARN L147 QuantifierPusher]: treesize reduction 23, result has 66.2 percent of original size 45 [2021-02-24 04:46:12,352 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 04:46:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,568 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-24 04:46:12,570 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-24 04:46:12,586 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-24 04:46:12,591 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-24 04:46:12,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:12,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:12,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794793459] [2021-02-24 04:46:12,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:12,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:46:12,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979037511] [2021-02-24 04:46:12,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:46:12,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:12,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:46:12,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:46:12,647 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2021-02-24 04:46:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:12,945 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2021-02-24 04:46:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:46:12,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-24 04:46:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:12,948 INFO L225 Difference]: With dead ends: 87 [2021-02-24 04:46:12,948 INFO L226 Difference]: Without dead ends: 59 [2021-02-24 04:46:12,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:46:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-02-24 04:46:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-02-24 04:46:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-24 04:46:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-24 04:46:12,962 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 40 [2021-02-24 04:46:12,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:12,963 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-24 04:46:12,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:46:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-24 04:46:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 04:46:12,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:12,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:12,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:12,965 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1405437972, now seen corresponding path program 1 times [2021-02-24 04:46:12,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:12,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779586568] [2021-02-24 04:46:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:12,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:46:12,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:46:12,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-24 04:46:13,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:46:13,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-24 04:46:13,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:13,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:46:13,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:13,033 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-24 04:46:13,034 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:15 [2021-02-24 04:46:13,036 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: cannot bring into simultaneous update form, |v_init_#t~malloc4.base_3| has two outvars in equality [(= |v_init_#t~malloc4.offset_3| 0), (= (store |v_#valid_20| |v_init_#t~malloc4.base_3| 1) |v_#valid_19|), (= (select |v_#valid_20| |v_init_#t~malloc4.base_3|) 0), (= |v_#length_15| (store |v_#length_16| |v_init_#t~malloc4.base_3| 4)), (< v_init_~i~0_9 v_init_~size_4), (< |v_init_#t~malloc4.base_3| |v_#StackHeapBarrier_6|), (= (store |v_#memory_$Pointer$.offset_13| v_init_~a.base_3 (store (select |v_#memory_$Pointer$.offset_13| v_init_~a.base_3) (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)) |v_init_#t~malloc4.offset_3|)) |v_#memory_$Pointer$.offset_12|), (= (store |v_#memory_$Pointer$.base_13| v_init_~a.base_3 (store (select |v_#memory_$Pointer$.base_13| v_init_~a.base_3) (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)) |v_init_#t~malloc4.base_3|)) |v_#memory_$Pointer$.base_12|), (= (store |v_#memory_int_10| v_init_~a.base_3 (let ((.cse0 (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)))) (store (select |v_#memory_int_10| v_init_~a.base_3) .cse0 (select (select |v_#memory_int_9| v_init_~a.base_3) .cse0)))) |v_#memory_int_9|), (< |v_init_#t~malloc4.base_3| 0), (= (+ v_init_~i~0_9 1) v_init_~i~0_8)] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:104) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.werner.LoopAcceleratorLite.calculateSymbolicMemory(LoopAcceleratorLite.java:167) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.werner.LoopAcceleratorLite.summarizeLoop(LoopAcceleratorLite.java:105) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:52) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 04:46:13,040 INFO L168 Benchmark]: Toolchain (without parser) took 2754.75 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 133.2 MB in the beginning and 84.4 MB in the end (delta: 48.8 MB). Peak memory consumption was 81.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,040 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:13,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.69 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 122.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,042 INFO L168 Benchmark]: Boogie Preprocessor took 41.30 ms. Allocated memory is still 157.3 MB. Free memory was 122.1 MB in the beginning and 120.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,043 INFO L168 Benchmark]: RCFGBuilder took 602.81 ms. Allocated memory is still 157.3 MB. Free memory was 120.2 MB in the beginning and 136.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,044 INFO L168 Benchmark]: TraceAbstraction took 1833.77 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 135.6 MB in the beginning and 84.4 MB in the end (delta: 51.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.69 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 122.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.30 ms. Allocated memory is still 157.3 MB. Free memory was 122.1 MB in the beginning and 120.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 602.81 ms. Allocated memory is still 157.3 MB. Free memory was 120.2 MB in the beginning and 136.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1833.77 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 135.6 MB in the beginning and 84.4 MB in the end (delta: 51.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: cannot bring into simultaneous update form, |v_init_#t~malloc4.base_3| has two outvars in equality [(= |v_init_#t~malloc4.offset_3| 0), (= (store |v_#valid_20| |v_init_#t~malloc4.base_3| 1) |v_#valid_19|), (= (select |v_#valid_20| |v_init_#t~malloc4.base_3|) 0), (= |v_#length_15| (store |v_#length_16| |v_init_#t~malloc4.base_3| 4)), (< v_init_~i~0_9 v_init_~size_4), (< |v_init_#t~malloc4.base_3| |v_#StackHeapBarrier_6|), (= (store |v_#memory_$Pointer$.offset_13| v_init_~a.base_3 (store (select |v_#memory_$Pointer$.offset_13| v_init_~a.base_3) (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)) |v_init_#t~malloc4.offset_3|)) |v_#memory_$Pointer$.offset_12|), (= (store |v_#memory_$Pointer$.base_13| v_init_~a.base_3 (store (select |v_#memory_$Pointer$.base_13| v_init_~a.base_3) (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)) |v_init_#t~malloc4.base_3|)) |v_#memory_$Pointer$.base_12|), (= (store |v_#memory_int_10| v_init_~a.base_3 (let ((.cse0 (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)))) (store (select |v_#memory_int_10| v_init_~a.base_3) .cse0 (select (select |v_#memory_int_9| v_init_~a.base_3) .cse0)))) |v_#memory_int_9|), (< |v_init_#t~malloc4.base_3| 0), (= (+ v_init_~i~0_9 1) v_init_~i~0_8)] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form, |v_init_#t~malloc4.base_3| has two outvars in equality [(= |v_init_#t~malloc4.offset_3| 0), (= (store |v_#valid_20| |v_init_#t~malloc4.base_3| 1) |v_#valid_19|), (= (select |v_#valid_20| |v_init_#t~malloc4.base_3|) 0), (= |v_#length_15| (store |v_#length_16| |v_init_#t~malloc4.base_3| 4)), (< v_init_~i~0_9 v_init_~size_4), (< |v_init_#t~malloc4.base_3| |v_#StackHeapBarrier_6|), (= (store |v_#memory_$Pointer$.offset_13| v_init_~a.base_3 (store (select |v_#memory_$Pointer$.offset_13| v_init_~a.base_3) (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)) |v_init_#t~malloc4.offset_3|)) |v_#memory_$Pointer$.offset_12|), (= (store |v_#memory_$Pointer$.base_13| v_init_~a.base_3 (store (select |v_#memory_$Pointer$.base_13| v_init_~a.base_3) (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)) |v_init_#t~malloc4.base_3|)) |v_#memory_$Pointer$.base_12|), (= (store |v_#memory_int_10| v_init_~a.base_3 (let ((.cse0 (+ v_init_~a.offset_3 (* v_init_~i~0_9 4)))) (store (select |v_#memory_int_10| v_init_~a.base_3) .cse0 (select (select |v_#memory_int_9| v_init_~a.base_3) .cse0)))) |v_#memory_int_9|), (< |v_init_#t~malloc4.base_3| 0), (= (+ v_init_~i~0_9 1) v_init_~i~0_8)]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...