/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:10:49,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:49,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:49,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:49,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:49,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:49,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:49,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:49,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:49,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:49,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:49,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:49,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:49,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:49,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:49,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:49,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:49,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:49,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:49,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:49,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:49,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:49,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:49,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:49,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:10:49,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:10:49,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:10:49,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:10:49,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:10:49,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:10:49,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:10:49,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:10:49,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:10:49,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:10:49,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:10:49,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:10:49,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:10:49,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:10:49,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:49,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:49,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:49,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:10:49,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:49,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:49,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:49,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:49,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:49,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:49,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:49,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:49,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:49,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:49,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:49,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:49,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:49,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:49,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:49,682 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:49,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:49,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:49,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:49,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:49,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:49,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:49,684 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-09-04 23:10:50,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:50,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:50,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:50,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:50,142 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:50,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-09-04 23:10:50,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd1cf8b88/9e74a1392639496eaabf41c481f68b3d/FLAGed7d0b1d3 [2020-09-04 23:10:50,751 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:50,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_01.c [2020-09-04 23:10:50,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd1cf8b88/9e74a1392639496eaabf41c481f68b3d/FLAGed7d0b1d3 [2020-09-04 23:10:51,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd1cf8b88/9e74a1392639496eaabf41c481f68b3d [2020-09-04 23:10:51,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:51,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:51,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:51,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:51,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:51,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d5d771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51, skipping insertion in model container [2020-09-04 23:10:51,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:51,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:51,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:51,415 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:51,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:51,451 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:51,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51 WrapperNode [2020-09-04 23:10:51,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:51,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:51,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:51,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:51,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... [2020-09-04 23:10:51,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:51,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:51,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:51,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:51,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:10:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 23:10:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:10:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:10:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:51,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:51,894 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:10:51,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:51 BoogieIcfgContainer [2020-09-04 23:10:51,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:51,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:51,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:51,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:51,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:51" (1/3) ... [2020-09-04 23:10:51,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3ec113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:51, skipping insertion in model container [2020-09-04 23:10:51,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:51" (2/3) ... [2020-09-04 23:10:51,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3ec113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:51, skipping insertion in model container [2020-09-04 23:10:51,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:51" (3/3) ... [2020-09-04 23:10:51,928 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-09-04 23:10:51,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:51,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:51,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:51,995 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:51,995 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:51,995 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:51,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:51,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:51,996 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:51,996 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:51,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:52,012 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-04 23:10:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 23:10:52,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:52,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:52,024 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2009717658, now seen corresponding path program 1 times [2020-09-04 23:10:52,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:52,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619965611] [2020-09-04 23:10:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:52,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619965611] [2020-09-04 23:10:52,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:52,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:10:52,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109239737] [2020-09-04 23:10:52,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:10:52,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:52,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:10:52,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:52,289 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-09-04 23:10:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:52,405 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-09-04 23:10:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:10:52,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 23:10:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:52,416 INFO L225 Difference]: With dead ends: 49 [2020-09-04 23:10:52,416 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 23:10:52,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 23:10:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 23:10:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 23:10:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-04 23:10:52,465 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2020-09-04 23:10:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:52,465 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-04 23:10:52,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:10:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-04 23:10:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 23:10:52,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:52,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:52,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:52,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1896871379, now seen corresponding path program 1 times [2020-09-04 23:10:52,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:52,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425733259] [2020-09-04 23:10:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:52,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:52,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:52,541 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:10:52,541 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:10:52,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:52,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:52 BoogieIcfgContainer [2020-09-04 23:10:52,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:52,580 INFO L168 Benchmark]: Toolchain (without parser) took 1458.65 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 135.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:52,581 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:52,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.30 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:52,584 INFO L168 Benchmark]: Boogie Preprocessor took 117.26 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 181.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:52,585 INFO L168 Benchmark]: RCFGBuilder took 331.62 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:52,586 INFO L168 Benchmark]: TraceAbstraction took 666.59 ms. Allocated memory is still 202.9 MB. Free memory was 165.9 MB in the beginning and 135.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:52,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.30 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.26 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 181.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.62 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.6 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 666.59 ms. Allocated memory is still 202.9 MB. Free memory was 165.9 MB in the beginning and 135.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); VAL [x={2:0}] [L13] int x=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=100, x={2:0}] [L14] int *p = &x; VAL [p={2:0}, x={2:0}] [L16] EXPR \read(x) VAL [\read(x)=100, p={2:0}, x={2:0}] [L16] COND FALSE !(x<100) VAL [\read(x)=100, p={2:0}, x={2:0}] [L19] CALL __VERIFIER_assert(0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...