/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 04:36:46,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 04:36:46,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 04:36:46,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 04:36:46,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 04:36:46,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 04:36:46,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 04:36:46,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 04:36:46,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 04:36:46,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 04:36:46,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 04:36:46,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 04:36:46,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 04:36:46,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 04:36:46,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 04:36:46,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 04:36:46,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 04:36:46,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 04:36:46,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 04:36:46,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 04:36:46,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 04:36:46,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 04:36:46,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 04:36:46,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 04:36:46,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 04:36:46,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 04:36:46,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 04:36:46,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 04:36:46,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 04:36:46,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 04:36:46,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 04:36:46,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 04:36:46,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 04:36:46,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 04:36:46,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 04:36:46,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 04:36:46,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 04:36:46,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 04:36:46,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 04:36:46,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 04:36:46,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 04:36:46,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 04:36:46,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 04:36:46,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 04:36:46,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 04:36:46,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 04:36:46,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 04:36:46,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 04:36:46,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 04:36:46,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 04:36:46,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 04:36:46,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 04:36:46,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 04:36:46,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 04:36:46,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 04:36:46,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 04:36:46,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 04:36:46,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 04:36:46,558 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 04:36:46,559 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 04:36:46,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 04:36:46,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 04:36:46,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 04:36:46,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 04:36:46,905 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 04:36:46,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1-u.c [2021-04-16 04:36:46,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1df709e/41f56693050749938211a104e9b7c223/FLAG481b1a363 [2021-04-16 04:36:47,777 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 04:36:47,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1-u.c [2021-04-16 04:36:47,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1df709e/41f56693050749938211a104e9b7c223/FLAG481b1a363 [2021-04-16 04:36:47,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1df709e/41f56693050749938211a104e9b7c223 [2021-04-16 04:36:47,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 04:36:47,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 04:36:47,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 04:36:47,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 04:36:47,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 04:36:47,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:47,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288b19c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47, skipping insertion in model container [2021-04-16 04:36:47,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:47,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 04:36:47,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 04:36:47,945 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/geo1-u.c[563,576] [2021-04-16 04:36:47,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 04:36:47,962 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 04:36:47,972 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/geo1-u.c[563,576] [2021-04-16 04:36:47,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 04:36:47,991 INFO L208 MainTranslator]: Completed translation [2021-04-16 04:36:47,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47 WrapperNode [2021-04-16 04:36:47,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 04:36:47,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 04:36:47,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 04:36:47,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 04:36:48,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (1/1) ... [2021-04-16 04:36:48,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 04:36:48,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 04:36:48,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 04:36:48,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 04:36:48,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (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 04:36:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 04:36:48,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 04:36:48,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 04:36:48,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 04:36:48,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 04:36:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 04:36:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 04:36:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 04:36:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 04:36:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 04:36:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-04-16 04:36:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 04:36:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 04:36:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 04:36:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 04:36:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 04:36:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 04:36:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 04:36:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 04:36:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 04:36:48,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 04:36:48,426 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 04:36:48,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 04:36:48 BoogieIcfgContainer [2021-04-16 04:36:48,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 04:36:48,428 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 04:36:48,428 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 04:36:48,429 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 04:36:48,431 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 04:36:48" (1/1) ... [2021-04-16 04:36:48,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 04:36:48 BasicIcfg [2021-04-16 04:36:48,471 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 04:36:48,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 04:36:48,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 04:36:48,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 04:36:48,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 04:36:47" (1/4) ... [2021-04-16 04:36:48,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af6e786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 04:36:48, skipping insertion in model container [2021-04-16 04:36:48,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:36:47" (2/4) ... [2021-04-16 04:36:48,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af6e786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 04:36:48, skipping insertion in model container [2021-04-16 04:36:48,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 04:36:48" (3/4) ... [2021-04-16 04:36:48,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af6e786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 04:36:48, skipping insertion in model container [2021-04-16 04:36:48,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 04:36:48" (4/4) ... [2021-04-16 04:36:48,494 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u.cJordan [2021-04-16 04:36:48,498 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 04:36:48,502 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 04:36:48,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 04:36:48,554 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 04:36:48,555 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 04:36:48,555 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 04:36:48,555 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 04:36:48,555 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 04:36:48,555 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 04:36:48,555 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 04:36:48,555 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 04:36:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 04:36:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 04:36:48,582 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 04:36:48,583 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 04:36:48,583 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 04:36:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 04:36:48,592 INFO L82 PathProgramCache]: Analyzing trace with hash -628176271, now seen corresponding path program 1 times [2021-04-16 04:36:48,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 04:36:48,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980966812] [2021-04-16 04:36:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 04:36:48,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-04-16 04:36:48,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205781057] [2021-04-16 04:36:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 04:36:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:36:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-16 04:36:48,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 04:36:48,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 04:36:48,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 04:36:48,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:36:48,940 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 04:36:48,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:36:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:36:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 04:36:48,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980966812] [2021-04-16 04:36:48,953 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-04-16 04:36:48,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205781057] [2021-04-16 04:36:48,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 04:36:48,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 04:36:48,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027299372] [2021-04-16 04:36:48,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 04:36:48,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 04:36:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 04:36:48,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 04:36:48,974 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:36:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 04:36:49,031 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-04-16 04:36:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 04:36:49,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 04:36:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 04:36:49,039 INFO L225 Difference]: With dead ends: 30 [2021-04-16 04:36:49,039 INFO L226 Difference]: Without dead ends: 25 [2021-04-16 04:36:49,040 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 04:36:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-04-16 04:36:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-04-16 04:36:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 04:36:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-04-16 04:36:49,069 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2021-04-16 04:36:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 04:36:49,070 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-04-16 04:36:49,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:36:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-04-16 04:36:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-04-16 04:36:49,071 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 04:36:49,071 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 04:36:49,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-04-16 04:36:49,294 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 04:36:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 04:36:49,295 INFO L82 PathProgramCache]: Analyzing trace with hash -337724478, now seen corresponding path program 1 times [2021-04-16 04:36:49,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 04:36:49,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172408262] [2021-04-16 04:36:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 04:36:49,309 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-04-16 04:36:49,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126426049] [2021-04-16 04:36:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 04:36:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 04:36:49,359 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 04:36:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 04:36:49,373 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 04:36:49,404 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-16 04:36:49,404 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 04:36:49,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 04:36:49,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 04:36:49 BasicIcfg [2021-04-16 04:36:49,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 04:36:49,650 INFO L168 Benchmark]: Toolchain (without parser) took 1851.09 ms. Allocated memory is still 186.6 MB. Free memory was 152.2 MB in the beginning and 101.1 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. [2021-04-16 04:36:49,650 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 186.6 MB. Free memory is still 169.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 04:36:49,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.46 ms. Allocated memory is still 186.6 MB. Free memory was 152.0 MB in the beginning and 142.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 04:36:49,651 INFO L168 Benchmark]: Boogie Preprocessor took 56.04 ms. Allocated memory is still 186.6 MB. Free memory was 142.5 MB in the beginning and 170.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2021-04-16 04:36:49,651 INFO L168 Benchmark]: RCFGBuilder took 378.38 ms. Allocated memory is still 186.6 MB. Free memory was 170.8 MB in the beginning and 157.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 04:36:49,652 INFO L168 Benchmark]: IcfgTransformer took 42.65 ms. Allocated memory is still 186.6 MB. Free memory was 157.2 MB in the beginning and 155.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-04-16 04:36:49,652 INFO L168 Benchmark]: TraceAbstraction took 1176.80 ms. Allocated memory is still 186.6 MB. Free memory was 155.1 MB in the beginning and 101.1 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2021-04-16 04:36:49,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 186.6 MB. Free memory is still 169.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 191.46 ms. Allocated memory is still 186.6 MB. Free memory was 152.0 MB in the beginning and 142.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.04 ms. Allocated memory is still 186.6 MB. Free memory was 142.5 MB in the beginning and 170.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.38 ms. Allocated memory is still 186.6 MB. Free memory was 170.8 MB in the beginning and 157.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 42.65 ms. Allocated memory is still 186.6 MB. Free memory was 157.2 MB in the beginning and 155.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1176.80 ms. Allocated memory is still 186.6 MB. Free memory was 155.1 MB in the beginning and 101.1 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L26] k = __VERIFIER_nondet_unsigned_int() [L28] x = 1 [L29] y = z [L30] c = 1 VAL [c=1, x=1, y=0, z=0] [L32] COND TRUE 1 VAL [c=1, x=1, y=0, z=0] [L33] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, x=1, y=0, z=0] [L35] COND TRUE !(c < k) VAL [c=1, k=0, x=1, y=0, z=0] [L44] x = x * (z - 1) VAL [c=1, k=0, x=4294967295, y=0, z=0] [L46] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1082.0ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 16.7ms, AutomataDifference: 81.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 6 SDslu, 54 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.5ms SsaConstructionTime, 54.4ms SatisfiabilityAnalysisTime, 160.7ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 1 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...