/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:11,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:11,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:11,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:11,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:11,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:11,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:11,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:11,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:11,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:11,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:11,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:11,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:11,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:11,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:11,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:11,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:11,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:11,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:11,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:11,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:11,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:11,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:11,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:11,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:11,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:11,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:11,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:11,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:11,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:11,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:11,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:11,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:11,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:11,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:11,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:11,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:11,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:11,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:11,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:11,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:11,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:11,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:11,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:11,662 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:11,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:11,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:11,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:11,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:11,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:11,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:11,663 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:11,663 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:12,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:12,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:12,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:12,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:12,159 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:12,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2021-02-24 04:46:12,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35a15fce/90ece860bc8d44f69da4c70f0f1f5c9c/FLAG6b370f8ca [2021-02-24 04:46:12,912 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:12,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2021-02-24 04:46:12,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35a15fce/90ece860bc8d44f69da4c70f0f1f5c9c/FLAG6b370f8ca [2021-02-24 04:46:13,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35a15fce/90ece860bc8d44f69da4c70f0f1f5c9c [2021-02-24 04:46:13,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:13,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:13,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:13,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:13,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:13,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc1c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13, skipping insertion in model container [2021-02-24 04:46:13,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:13,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:13,570 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c[588,601] [2021-02-24 04:46:13,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:13,608 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:13,625 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c[588,601] [2021-02-24 04:46:13,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:13,673 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:13,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13 WrapperNode [2021-02-24 04:46:13,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:13,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:13,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:13,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:13,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... [2021-02-24 04:46:13,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:13,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:13,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:13,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:13,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:13,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:13,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:14,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:14,429 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:14,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:14 BoogieIcfgContainer [2021-02-24 04:46:14,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:14,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:14,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:14,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:14,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:13" (1/3) ... [2021-02-24 04:46:14,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43aebfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:14, skipping insertion in model container [2021-02-24 04:46:14,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:13" (2/3) ... [2021-02-24 04:46:14,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43aebfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:14, skipping insertion in model container [2021-02-24 04:46:14,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:14" (3/3) ... [2021-02-24 04:46:14,441 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2021-02-24 04:46:14,448 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:14,454 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:14,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:14,500 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:14,500 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:14,500 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:14,500 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:14,501 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:14,501 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:14,501 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:14,501 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-24 04:46:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:14,529 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:14,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:14,530 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-24 04:46:14,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:14,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507187316] [2021-02-24 04:46:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:14,624 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:14,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:14,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:14,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:14,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507187316] [2021-02-24 04:46:14,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:14,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:14,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368709214] [2021-02-24 04:46:14,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:14,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:14,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:14,896 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-24 04:46:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:15,133 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-24 04:46:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:15,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-24 04:46:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:15,145 INFO L225 Difference]: With dead ends: 107 [2021-02-24 04:46:15,146 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:46:15,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:46:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-02-24 04:46:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 04:46:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-24 04:46:15,235 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2021-02-24 04:46:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:15,236 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-24 04:46:15,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-24 04:46:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:15,237 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:15,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:15,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:15,238 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:15,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-24 04:46:15,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:15,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671649651] [2021-02-24 04:46:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:15,244 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:15,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:15,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:15,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:15,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:15,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:15,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671649651] [2021-02-24 04:46:15,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:15,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:15,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539553221] [2021-02-24 04:46:15,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:15,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:15,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:15,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:15,421 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2021-02-24 04:46:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:15,680 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-02-24 04:46:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:15,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-24 04:46:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:15,683 INFO L225 Difference]: With dead ends: 86 [2021-02-24 04:46:15,683 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 04:46:15,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 04:46:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-02-24 04:46:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-24 04:46:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-24 04:46:15,701 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 35 [2021-02-24 04:46:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:15,702 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-24 04:46:15,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-24 04:46:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 04:46:15,704 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:15,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:15,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:15,704 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-24 04:46:15,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:15,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882482129] [2021-02-24 04:46:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:15,780 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-24 04:46:15,808 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-24 04:46:15,814 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-24 04:46:15,814 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-24 04:46:15,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:15,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:15,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,826 WARN L141 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-02-24 04:46:15,829 WARN L147 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size 19 [2021-02-24 04:46:15,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:15,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:15,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,839 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 04:46:15,841 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 04:46:15,841 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:46:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:15,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:15,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:15,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:46:15,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:15,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:15,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:15,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:15,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:15,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:15,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:16,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:16,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:16,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:16,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:46:16,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:16,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:16,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:16,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:16,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 04:46:16,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:16,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:16,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 04:46:16,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:16,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:16,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-02-24 04:46:16,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:16,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:16,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-24 04:46:16,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:16,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:16,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882482129] [2021-02-24 04:46:16,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:16,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 04:46:16,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556704475] [2021-02-24 04:46:16,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 04:46:16,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:16,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 04:46:16,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=193, Unknown=3, NotChecked=0, Total=240 [2021-02-24 04:46:16,305 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 16 states. [2021-02-24 04:46:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:17,068 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2021-02-24 04:46:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 04:46:17,069 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2021-02-24 04:46:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:17,071 INFO L225 Difference]: With dead ends: 108 [2021-02-24 04:46:17,071 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 04:46:17,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=420, Unknown=3, NotChecked=0, Total=506 [2021-02-24 04:46:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 04:46:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2021-02-24 04:46:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-24 04:46:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-02-24 04:46:17,089 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 47 [2021-02-24 04:46:17,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:17,090 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-02-24 04:46:17,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 04:46:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-02-24 04:46:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 04:46:17,092 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:17,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:17,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:17,093 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:17,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1679168281, now seen corresponding path program 1 times [2021-02-24 04:46:17,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:17,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427911032] [2021-02-24 04:46:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:17,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:17,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:17,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,142 WARN L141 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-02-24 04:46:17,145 WARN L147 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size 19 [2021-02-24 04:46:17,149 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-24 04:46:17,151 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-24 04:46:17,153 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-24 04:46:17,154 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-24 04:46:17,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:17,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:17,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:17,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:17,163 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 04:46:17,164 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 04:46:17,165 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:46:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:17,210 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:17,281 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:17,336 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:17,337 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:17,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:46:17,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:17 BoogieIcfgContainer [2021-02-24 04:46:17,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:17,357 INFO L168 Benchmark]: Toolchain (without parser) took 4074.68 ms. Allocated memory was 156.2 MB in the beginning and 195.0 MB in the end (delta: 38.8 MB). Free memory was 133.0 MB in the beginning and 103.6 MB in the end (delta: 29.5 MB). Peak memory consumption was 69.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:17,358 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:17,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.64 ms. Allocated memory is still 156.2 MB. Free memory was 131.9 MB in the beginning and 122.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:17,359 INFO L168 Benchmark]: Boogie Preprocessor took 78.25 ms. Allocated memory is still 156.2 MB. Free memory was 122.0 MB in the beginning and 120.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:17,360 INFO L168 Benchmark]: RCFGBuilder took 676.61 ms. Allocated memory is still 156.2 MB. Free memory was 120.4 MB in the beginning and 132.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:17,361 INFO L168 Benchmark]: TraceAbstraction took 2922.43 ms. Allocated memory was 156.2 MB in the beginning and 195.0 MB in the end (delta: 38.8 MB). Free memory was 132.0 MB in the beginning and 103.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:17,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 372.64 ms. Allocated memory is still 156.2 MB. Free memory was 131.9 MB in the beginning and 122.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.25 ms. Allocated memory is still 156.2 MB. Free memory was 122.0 MB in the beginning and 120.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 676.61 ms. Allocated memory is still 156.2 MB. Free memory was 120.4 MB in the beginning and 132.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2922.43 ms. Allocated memory was 156.2 MB in the beginning and 195.0 MB in the end (delta: 38.8 MB). Free memory was 132.0 MB in the beginning and 103.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i