/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:50:43,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:50:43,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:50:43,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:50:43,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:50:43,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:50:43,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:50:43,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:50:43,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:50:43,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:50:43,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:50:43,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:50:43,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:50:43,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:50:43,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:50:43,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:50:43,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:50:43,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:50:43,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:50:43,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:50:43,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:50:43,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:50:43,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:50:43,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:50:43,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:50:43,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:50:43,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:50:43,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:50:43,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:50:43,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:50:43,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:50:43,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:50:43,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:50:43,736 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:50:43,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:50:43,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:50:43,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:50:43,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:50:43,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:50:43,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:50:43,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:50:43,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:50:43,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:50:43,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:50:43,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:50:43,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:50:43,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:50:43,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:50:43,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:50:43,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:50:43,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:43,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:50:43,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:50:43,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:50:43,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:50:43,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:50:43,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:50:43,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:50:43,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:50:44,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:50:44,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:50:44,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:50:44,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:50:44,060 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:50:44,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2020-07-17 22:50:44,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b74a8219/14c0b9f80708482eab594154c34ec73a/FLAG4a7073fbc [2020-07-17 22:50:44,630 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:44,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c [2020-07-17 22:50:44,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b74a8219/14c0b9f80708482eab594154c34ec73a/FLAG4a7073fbc [2020-07-17 22:50:44,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b74a8219/14c0b9f80708482eab594154c34ec73a [2020-07-17 22:50:44,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:44,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:45,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:45,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:45,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:45,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:44" (1/1) ... [2020-07-17 22:50:45,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c2d01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45, skipping insertion in model container [2020-07-17 22:50:45,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:44" (1/1) ... [2020-07-17 22:50:45,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:45,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:45,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:45,208 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:45,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:45,242 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:45,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45 WrapperNode [2020-07-17 22:50:45,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:45,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:45,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:45,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:45,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (1/1) ... [2020-07-17 22:50:45,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:45,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:45,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:45,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:45,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (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 [2020-07-17 22:50:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-17 22:50:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 22:50:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:45,725 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:45,725 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:50:45,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:45 BoogieIcfgContainer [2020-07-17 22:50:45,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:45,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:45,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:45,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:45,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:44" (1/3) ... [2020-07-17 22:50:45,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b14e537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:45, skipping insertion in model container [2020-07-17 22:50:45,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:45" (2/3) ... [2020-07-17 22:50:45,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b14e537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:45, skipping insertion in model container [2020-07-17 22:50:45,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:45" (3/3) ... [2020-07-17 22:50:45,741 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2020-07-17 22:50:45,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:45,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:45,782 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:45,809 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:45,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:45,809 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:45,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:45,810 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:45,810 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:45,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:45,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-17 22:50:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:50:45,837 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:45,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:45,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:45,845 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2020-07-17 22:50:45,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:45,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681184381] [2020-07-17 22:50:45,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:46,006 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-17 22:50:46,006 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {24#true} {24#true} #44#return; {24#true} is VALID [2020-07-17 22:50:46,008 INFO L263 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2020-07-17 22:50:46,008 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-17 22:50:46,009 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #44#return; {24#true} is VALID [2020-07-17 22:50:46,009 INFO L263 TraceCheckUtils]: 3: Hoare triple {24#true} call #t~ret7 := main(); {24#true} is VALID [2020-07-17 22:50:46,010 INFO L280 TraceCheckUtils]: 4: Hoare triple {24#true} ~x1~0 := #t~nondet0;havoc #t~nondet0;~x2~0 := #t~nondet1;havoc #t~nondet1;~x3~0 := #t~nondet2;havoc #t~nondet2;~d1~0 := 1;~d2~0 := 1;~d3~0 := 1;~c1~0 := #t~nondet3;havoc #t~nondet3;~c2~0 := #t~nondet4;havoc #t~nondet4; {24#true} is VALID [2020-07-17 22:50:46,011 INFO L280 TraceCheckUtils]: 5: Hoare triple {24#true} assume !true; {25#false} is VALID [2020-07-17 22:50:46,012 INFO L263 TraceCheckUtils]: 6: Hoare triple {25#false} call __VERIFIER_assert((if (0 == ~x1~0 % 4294967296 || 0 == ~x2~0 % 4294967296) || 0 == ~x3~0 % 4294967296 then 1 else 0)); {25#false} is VALID [2020-07-17 22:50:46,012 INFO L280 TraceCheckUtils]: 7: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2020-07-17 22:50:46,012 INFO L280 TraceCheckUtils]: 8: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2020-07-17 22:50:46,013 INFO L280 TraceCheckUtils]: 9: Hoare triple {25#false} assume !false; {25#false} is VALID [2020-07-17 22:50:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:46,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681184381] [2020-07-17 22:50:46,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:46,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:50:46,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410227057] [2020-07-17 22:50:46,022 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:50:46,026 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:46,030 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:50:46,056 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:46,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:50:46,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:46,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:50:46,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:50:46,069 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-17 22:50:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:46,143 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-17 22:50:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:50:46,143 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:50:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2020-07-17 22:50:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2020-07-17 22:50:46,160 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 38 transitions. [2020-07-17 22:50:46,242 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:46,253 INFO L225 Difference]: With dead ends: 33 [2020-07-17 22:50:46,254 INFO L226 Difference]: Without dead ends: 14 [2020-07-17 22:50:46,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:50:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-17 22:50:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-17 22:50:46,301 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:46,301 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:46,302 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:46,302 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:46,306 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-07-17 22:50:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-07-17 22:50:46,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:46,307 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:46,307 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:46,307 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:50:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:46,311 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-07-17 22:50:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-07-17 22:50:46,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:46,312 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:46,312 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:46,312 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-17 22:50:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-07-17 22:50:46,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-07-17 22:50:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:46,317 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-07-17 22:50:46,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:50:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-07-17 22:50:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:50:46,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:46,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:46,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:46,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:46,320 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2020-07-17 22:50:46,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:46,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350151274] [2020-07-17 22:50:46,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:46,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:50:46,417 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 22:50:46,426 INFO L168 Benchmark]: Toolchain (without parser) took 1426.55 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 121.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:46,429 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:50:46,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.31 ms. Allocated memory is still 143.1 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:46,432 INFO L168 Benchmark]: Boogie Preprocessor took 131.02 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 178.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:46,433 INFO L168 Benchmark]: RCFGBuilder took 355.76 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 161.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:46,435 INFO L168 Benchmark]: TraceAbstraction took 691.16 ms. Allocated memory is still 200.3 MB. Free memory was 161.5 MB in the beginning and 121.2 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:46,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.31 ms. Allocated memory is still 143.1 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.02 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 178.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.76 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 161.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 691.16 ms. Allocated memory is still 200.3 MB. Free memory was 161.5 MB in the beginning and 121.2 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...