/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:28:48,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:28:48,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:28:48,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:28:48,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:28:48,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:28:48,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:28:48,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:28:48,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:28:48,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:28:48,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:28:48,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:28:48,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:28:48,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:28:48,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:28:48,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:28:48,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:28:48,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:28:48,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:28:48,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:28:48,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:28:48,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:28:48,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:28:48,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:28:48,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:28:48,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:28:48,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:28:48,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:28:48,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:28:48,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:28:48,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:28:48,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:28:48,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:28:48,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:28:48,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:28:48,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:28:48,620 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:28:48,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:28:48,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:28:48,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:28:48,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:28:48,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:28:48,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:28:48,622 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:28:49,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:28:49,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:28:49,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:28:49,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:28:49,233 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:28:49,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2021-02-24 00:28:49,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a51dc32d/045b36f63ada497b817f76360cb34d11/FLAG572091ba6 [2021-02-24 00:28:49,979 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:28:49,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2021-02-24 00:28:49,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a51dc32d/045b36f63ada497b817f76360cb34d11/FLAG572091ba6 [2021-02-24 00:28:50,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a51dc32d/045b36f63ada497b817f76360cb34d11 [2021-02-24 00:28:50,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:28:50,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:28:50,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:28:50,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:28:50,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:28:50,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8cee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50, skipping insertion in model container [2021-02-24 00:28:50,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:28:50,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:28:50,621 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c[1224,1237] [2021-02-24 00:28:50,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:28:50,646 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:28:50,671 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c[1224,1237] [2021-02-24 00:28:50,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:28:50,697 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:28:50,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50 WrapperNode [2021-02-24 00:28:50,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:28:50,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:28:50,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:28:50,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:28:50,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... [2021-02-24 00:28:50,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:28:50,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:28:50,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:28:50,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:28:50,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:28:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:28:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:28:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:28:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:28:50,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:28:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:28:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:28:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:28:51,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:28:51,624 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 00:28:51,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:28:51 BoogieIcfgContainer [2021-02-24 00:28:51,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:28:51,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:28:51,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:28:51,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:28:51,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:28:50" (1/3) ... [2021-02-24 00:28:51,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cb15eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:28:51, skipping insertion in model container [2021-02-24 00:28:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:28:50" (2/3) ... [2021-02-24 00:28:51,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cb15eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:28:51, skipping insertion in model container [2021-02-24 00:28:51,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:28:51" (3/3) ... [2021-02-24 00:28:51,647 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2021-02-24 00:28:51,657 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:28:51,664 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:28:51,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:28:51,753 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:28:51,753 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:28:51,753 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:28:51,754 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:28:51,754 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:28:51,754 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:28:51,754 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:28:51,754 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:28:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-02-24 00:28:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 00:28:51,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:28:51,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:28:51,807 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:28:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:28:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash -882832926, now seen corresponding path program 1 times [2021-02-24 00:28:51,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:28:51,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316682538] [2021-02-24 00:28:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:28:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:28:52,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:52,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:52,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:52,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:28:52,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:52,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:52,477 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-02-24 00:28:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:28:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:28:52,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:52,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:28:52,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316682538] [2021-02-24 00:28:52,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:28:52,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:28:52,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854639696] [2021-02-24 00:28:52,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:28:52,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:28:52,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:28:52,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:28:52,617 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2021-02-24 00:28:52,837 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-24 00:28:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:28:53,237 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-02-24 00:28:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:28:53,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-02-24 00:28:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:28:53,255 INFO L225 Difference]: With dead ends: 91 [2021-02-24 00:28:53,255 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 00:28:53,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:28:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 00:28:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2021-02-24 00:28:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 00:28:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-02-24 00:28:53,333 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 28 [2021-02-24 00:28:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:28:53,334 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-02-24 00:28:53,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:28:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-02-24 00:28:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:28:53,337 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:28:53,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2021-02-24 00:28:53,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:28:53,338 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:28:53,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:28:53,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1517749848, now seen corresponding path program 1 times [2021-02-24 00:28:53,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:28:53,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113598576] [2021-02-24 00:28:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:28:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:28:53,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:53,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:53,635 WARN L141 QuantifierPusher]: treesize reduction 86, result has 62.8 percent of original size [2021-02-24 00:28:53,640 WARN L147 QuantifierPusher]: treesize reduction 86, result has 62.8 percent of original size 145 [2021-02-24 00:28:53,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:53,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-02-24 00:28:53,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:53,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:28:53,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:53,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:28:53,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:53,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:28:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:28:53,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:53,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:28:53,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113598576] [2021-02-24 00:28:53,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:28:53,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 00:28:53,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721816556] [2021-02-24 00:28:53,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:28:53,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:28:53,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:28:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:28:53,826 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2021-02-24 00:28:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:28:54,647 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2021-02-24 00:28:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:28:54,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-02-24 00:28:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:28:54,652 INFO L225 Difference]: With dead ends: 102 [2021-02-24 00:28:54,653 INFO L226 Difference]: Without dead ends: 63 [2021-02-24 00:28:54,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:28:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-24 00:28:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2021-02-24 00:28:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 00:28:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-24 00:28:54,685 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 36 [2021-02-24 00:28:54,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:28:54,686 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-24 00:28:54,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:28:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-24 00:28:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-24 00:28:54,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:28:54,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1] [2021-02-24 00:28:54,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:28:54,690 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:28:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:28:54,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1388696197, now seen corresponding path program 1 times [2021-02-24 00:28:54,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:28:54,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298268553] [2021-02-24 00:28:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:28:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:28:54,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:54,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:54,914 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.2 percent of original size [2021-02-24 00:28:54,916 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.2 percent of original size 121 [2021-02-24 00:28:54,930 WARN L141 QuantifierPusher]: treesize reduction 36, result has 77.4 percent of original size [2021-02-24 00:28:54,932 WARN L147 QuantifierPusher]: treesize reduction 36, result has 77.4 percent of original size 123 [2021-02-24 00:28:54,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:54,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-02-24 00:28:55,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:55,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:28:55,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:55,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:28:55,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:55,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:28:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:28:55,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:28:55,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:28:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:28:55,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298268553] [2021-02-24 00:28:55,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:28:55,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 00:28:55,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985831473] [2021-02-24 00:28:55,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:28:55,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:28:55,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:28:55,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:28:55,093 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2021-02-24 00:28:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:28:55,710 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-02-24 00:28:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:28:55,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2021-02-24 00:28:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:28:55,711 INFO L225 Difference]: With dead ends: 103 [2021-02-24 00:28:55,712 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:28:55,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:28:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:28:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:28:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:28:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:28:55,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-02-24 00:28:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:28:55,715 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:28:55,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:28:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:28:55,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:28:55,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:28:55,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:28:57,247 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-24 00:28:57,248 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-24 00:28:57,248 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-24 00:28:57,249 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-24 00:28:57,249 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-24 00:28:57,249 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,249 INFO L192 CegarLoopUtils]: At program point L4-5(line 4) the Hoare annotation is: true [2021-02-24 00:28:57,249 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,249 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,250 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_107~0 |old(~__return_107~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 00:28:57,250 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2021-02-24 00:28:57,250 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-24 00:28:57,250 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-24 00:28:57,250 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-24 00:28:57,251 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,251 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,251 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,251 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,251 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:28:57,251 INFO L185 CegarLoopUtils]: At program point L64(line 64) the Hoare annotation is: false [2021-02-24 00:28:57,252 INFO L185 CegarLoopUtils]: At program point L60(line 60) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,252 INFO L185 CegarLoopUtils]: At program point L27(lines 27 49) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,252 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 9 78) the Hoare annotation is: true [2021-02-24 00:28:57,253 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2021-02-24 00:28:57,253 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2021-02-24 00:28:57,253 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2021-02-24 00:28:57,254 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,254 INFO L192 CegarLoopUtils]: At program point L69(line 69) the Hoare annotation is: true [2021-02-24 00:28:57,254 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,254 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,254 INFO L185 CegarLoopUtils]: At program point L36-2(line 36) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,255 INFO L185 CegarLoopUtils]: At program point L61(lines 61 70) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,255 INFO L185 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,255 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse3 main_~main__x~0) 3))) (let ((.cse2 (div (+ .cse3 (* .cse1 (- 3)) main_~main__x~0) 4294967296))) (and (= |old(~__return_107~0)| ~__return_107~0) (<= (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 .cse2) 1) main_~main__x~0) (<= (* 1431655765 main_~main__x~0) (+ (* 6148914689804861440 .cse0) (* 4294967296 .cse1) (* 6148914689804861440 .cse2) 1431655765))))))) [2021-02-24 00:28:57,256 INFO L185 CegarLoopUtils]: At program point L16(lines 16 77) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2021-02-24 00:28:57,256 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,256 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,256 INFO L185 CegarLoopUtils]: At program point L37(lines 37 48) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,257 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 6148914689804861440 .cse0) (* 4294967295 .cse1) (* 6148914688373205674 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)) 2863311530)))) (* 1431655765 main_~main__x~0))) [2021-02-24 00:28:57,257 INFO L185 CegarLoopUtils]: At program point L58(line 58) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,257 INFO L185 CegarLoopUtils]: At program point L54(lines 54 76) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2021-02-24 00:28:57,257 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,258 INFO L185 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,258 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 9 78) the Hoare annotation is: true [2021-02-24 00:28:57,258 INFO L185 CegarLoopUtils]: At program point L75(line 75) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,258 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 63) the Hoare annotation is: false [2021-02-24 00:28:57,259 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: false [2021-02-24 00:28:57,259 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,259 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 9 78) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,259 INFO L185 CegarLoopUtils]: At program point L59(line 59) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2021-02-24 00:28:57,260 INFO L185 CegarLoopUtils]: At program point L18(lines 18 50) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,260 INFO L185 CegarLoopUtils]: At program point L47(lines 10 78) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= main_~main__y~0 1)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2021-02-24 00:28:57,260 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,261 INFO L185 CegarLoopUtils]: At program point L68(line 68) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,261 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2021-02-24 00:28:57,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:28:57 BoogieIcfgContainer [2021-02-24 00:28:57,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:28:57,295 INFO L168 Benchmark]: Toolchain (without parser) took 6951.92 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 128.3 MB in the beginning and 140.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 102.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:28:57,296 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:28:57,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.97 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:28:57,298 INFO L168 Benchmark]: Boogie Preprocessor took 55.49 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:28:57,299 INFO L168 Benchmark]: RCFGBuilder took 873.47 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 130.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:28:57,300 INFO L168 Benchmark]: TraceAbstraction took 5658.34 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 130.5 MB in the beginning and 140.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 104.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:28:57,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.97 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.49 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 873.47 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 130.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5658.34 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 130.5 MB in the beginning and 140.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 104.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 63]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (\old(__return_107) == __return_107 && main__y == 1) || (\old(__return_107) == __return_107 && main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296)) - ProcedureContractResult [Line: 9]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 176 SDslu, 139 SDs, 0 SdLazy, 416 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 52 PreInvPairs, 104 NumberOfFragments, 890 HoareAnnotationTreeSize, 52 FomulaSimplifications, 5340 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 52 FomulaSimplificationsInter, 1203 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 37859 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 10/10 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 correct! Received shutdown request...