/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:50:31,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:50:31,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:50:31,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:50:31,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:50:31,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:50:31,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:50:31,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:50:31,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:50:31,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:50:31,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:50:31,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:50:31,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:50:31,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:50:31,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:50:31,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:50:31,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:50:31,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:50:31,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:50:31,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:50:31,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:50:31,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:50:31,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:50:31,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:50:31,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 20:50:31,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 20:50:31,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 20:50:31,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 20:50:31,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 20:50:31,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 20:50:31,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 20:50:31,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 20:50:31,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 20:50:31,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 20:50:31,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 20:50:31,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 20:50:31,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 20:50:31,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 20:50:31,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:50:31,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:50:31,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:50:31,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:50:31,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:50:31,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:50:31,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:50:31,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:50:31,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:50:31,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:50:31,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:50:31,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:50:31,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:50:31,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:50:31,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:50:31,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:50:31,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:50:31,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:50:31,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:50:31,343 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:50:31,343 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:50:31,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:50:31,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:50:31,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:50:31,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:50:31,605 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:50:31,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c [2021-05-02 20:50:31,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456626121/43d0f06413534596884b84974c9f1d48/FLAG711b7142d [2021-05-02 20:50:32,060 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:50:32,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c [2021-05-02 20:50:32,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456626121/43d0f06413534596884b84974c9f1d48/FLAG711b7142d [2021-05-02 20:50:32,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456626121/43d0f06413534596884b84974c9f1d48 [2021-05-02 20:50:32,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:50:32,447 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:50:32,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:50:32,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:50:32,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:50:32,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8ed9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32, skipping insertion in model container [2021-05-02 20:50:32,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:50:32,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:50:32,544 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2021-05-02 20:50:32,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:50:32,556 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:50:32,613 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2021-05-02 20:50:32,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:50:32,633 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:50:32,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32 WrapperNode [2021-05-02 20:50:32,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:50:32,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:50:32,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:50:32,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:50:32,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... [2021-05-02 20:50:32,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:50:32,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:50:32,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:50:32,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:50:32,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:50:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:50:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:50:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:50:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:50:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:50:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:50:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:50:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:50:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:50:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:50:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:50:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:50:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:50:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:50:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:50:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:50:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:50:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:50:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:50:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:50:33,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:50:33,038 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 20:50:33,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:50:33 BoogieIcfgContainer [2021-05-02 20:50:33,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:50:33,039 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:50:33,039 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:50:33,040 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:50:33,041 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:50:33" (1/1) ... [2021-05-02 20:50:33,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:50:33 BasicIcfg [2021-05-02 20:50:33,051 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:50:33,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:50:33,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:50:33,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:50:33,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:50:32" (1/4) ... [2021-05-02 20:50:33,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:50:33, skipping insertion in model container [2021-05-02 20:50:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:32" (2/4) ... [2021-05-02 20:50:33,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:50:33, skipping insertion in model container [2021-05-02 20:50:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:50:33" (3/4) ... [2021-05-02 20:50:33,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:50:33, skipping insertion in model container [2021-05-02 20:50:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:50:33" (4/4) ... [2021-05-02 20:50:33,056 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.cJordan [2021-05-02 20:50:33,059 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:50:33,061 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:50:33,070 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:50:33,098 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:50:33,098 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:50:33,098 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:50:33,098 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:50:33,098 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:50:33,098 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:50:33,098 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:50:33,098 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:50:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:50:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:50:33,111 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:50:33,111 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:50:33,111 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:50:33,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:50:33,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2021-05-02 20:50:33,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:50:33,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549002577] [2021-05-02 20:50:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:50:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:50:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:50:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:50:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:50:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:50:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:50:33,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:50:33,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549002577] [2021-05-02 20:50:33,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549002577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:50:33,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:50:33,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:50:33,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108935864] [2021-05-02 20:50:33,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:50:33,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:50:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:50:33,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:50:33,392 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:50:33,444 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 20:50:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:50:33,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:50:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:50:33,450 INFO L225 Difference]: With dead ends: 32 [2021-05-02 20:50:33,450 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 20:50:33,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:50:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 20:50:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 20:50:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:50:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-02 20:50:33,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-05-02 20:50:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:50:33,471 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-02 20:50:33,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-02 20:50:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:50:33,472 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:50:33,473 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:50:33,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:50:33,473 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:50:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:50:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2021-05-02 20:50:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:50:33,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777305668] [2021-05-02 20:50:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:50:33,497 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:50:33,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948678271] [2021-05-02 20:50:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:50:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:33,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:50:33,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:50:33,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:50:33,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:50:33,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777305668] [2021-05-02 20:50:33,759 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:50:33,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948678271] [2021-05-02 20:50:33,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948678271] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:50:33,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:50:33,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:50:33,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724312217] [2021-05-02 20:50:33,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:50:33,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:50:33,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:50:33,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:50:33,761 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:50:33,827 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-05-02 20:50:33,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:50:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:50:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:50:33,829 INFO L225 Difference]: With dead ends: 35 [2021-05-02 20:50:33,829 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 20:50:33,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:50:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 20:50:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 20:50:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:50:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-02 20:50:33,833 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2021-05-02 20:50:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:50:33,834 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-02 20:50:33,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-02 20:50:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 20:50:33,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:50:33,835 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:50:34,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:50:34,049 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:50:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:50:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2021-05-02 20:50:34,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:50:34,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174419046] [2021-05-02 20:50:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:50:34,060 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:50:34,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76010905] [2021-05-02 20:50:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:50:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:34,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:50:34,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:50:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:50:34,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:50:34,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174419046] [2021-05-02 20:50:34,325 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:50:34,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76010905] [2021-05-02 20:50:34,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76010905] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:50:34,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:50:34,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:50:34,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898796652] [2021-05-02 20:50:34,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:50:34,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:50:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:50:34,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:50:34,327 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:50:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:50:34,444 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 20:50:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:50:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2021-05-02 20:50:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:50:34,445 INFO L225 Difference]: With dead ends: 31 [2021-05-02 20:50:34,445 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:50:34,445 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:50:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:50:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:50:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 20:50:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:50:34,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-02 20:50:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:50:34,446 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:50:34,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:50:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:50:34,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:50:34,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:50:34,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:50:34 BasicIcfg [2021-05-02 20:50:34,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:50:34,666 INFO L168 Benchmark]: Toolchain (without parser) took 2218.79 ms. Allocated memory was 195.0 MB in the beginning and 267.4 MB in the end (delta: 72.4 MB). Free memory was 158.8 MB in the beginning and 210.7 MB in the end (delta: -51.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:34,666 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 195.0 MB. Free memory is still 175.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:50:34,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.53 ms. Allocated memory is still 195.0 MB. Free memory was 158.6 MB in the beginning and 177.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:34,667 INFO L168 Benchmark]: Boogie Preprocessor took 43.14 ms. Allocated memory is still 195.0 MB. Free memory was 177.4 MB in the beginning and 175.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:34,667 INFO L168 Benchmark]: RCFGBuilder took 360.42 ms. Allocated memory is still 195.0 MB. Free memory was 175.6 MB in the beginning and 161.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:34,667 INFO L168 Benchmark]: IcfgTransformer took 12.43 ms. Allocated memory is still 195.0 MB. Free memory was 161.1 MB in the beginning and 159.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:34,667 INFO L168 Benchmark]: TraceAbstraction took 1613.48 ms. Allocated memory was 195.0 MB in the beginning and 267.4 MB in the end (delta: 72.4 MB). Free memory was 159.3 MB in the beginning and 210.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:34,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 195.0 MB. Free memory is still 175.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 182.53 ms. Allocated memory is still 195.0 MB. Free memory was 158.6 MB in the beginning and 177.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.14 ms. Allocated memory is still 195.0 MB. Free memory was 177.4 MB in the beginning and 175.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 360.42 ms. Allocated memory is still 195.0 MB. Free memory was 175.6 MB in the beginning and 161.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 12.43 ms. Allocated memory is still 195.0 MB. Free memory was 161.1 MB in the beginning and 159.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1613.48 ms. Allocated memory was 195.0 MB in the beginning and 267.4 MB in the end (delta: 72.4 MB). Free memory was 159.3 MB in the beginning and 210.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1582.6ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 8.6ms, AutomataDifference: 255.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 44 SDslu, 209 SDs, 0 SdLazy, 177 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 140.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 183.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.4ms SsaConstructionTime, 111.3ms SatisfiabilityAnalysisTime, 493.9ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 314 SizeOfPredicates, 6 NumberOfNonLiveVariables, 278 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 55/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...