/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 21:40:13,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 21:40:13,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 21:40:13,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 21:40:13,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 21:40:13,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 21:40:13,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 21:40:13,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 21:40:13,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 21:40:13,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 21:40:13,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 21:40:13,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 21:40:13,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 21:40:13,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 21:40:13,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 21:40:13,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 21:40:13,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 21:40:13,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 21:40:13,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 21:40:13,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 21:40:13,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 21:40:13,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 21:40:13,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 21:40:13,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 21:40:13,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 21:40:13,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 21:40:13,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 21:40:13,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 21:40:13,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 21:40:13,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 21:40:13,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 21:40:13,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 21:40:13,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 21:40:13,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 21:40:13,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 21:40:13,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 21:40:13,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 21:40:13,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 21:40:13,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 21:40:13,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 21:40:13,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 21:40:13,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:40:13,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 21:40:13,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 21:40:13,842 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 21:40:13,842 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 21:40:14,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 21:40:14,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 21:40:14,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 21:40:14,118 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 21:40:14,118 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 21:40:14,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-02 21:40:14,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6d4925a/42300be67ebb4279aa435686dcb2e97b/FLAGf909751f9 [2021-05-02 21:40:14,499 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 21:40:14,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-02 21:40:14,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6d4925a/42300be67ebb4279aa435686dcb2e97b/FLAGf909751f9 [2021-05-02 21:40:14,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6d4925a/42300be67ebb4279aa435686dcb2e97b [2021-05-02 21:40:14,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 21:40:14,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 21:40:14,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 21:40:14,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 21:40:14,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 21:40:14,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5623b805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14, skipping insertion in model container [2021-05-02 21:40:14,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 21:40:14,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 21:40:14,635 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2021-05-02 21:40:14,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:40:14,651 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 21:40:14,660 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2021-05-02 21:40:14,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:40:14,679 INFO L208 MainTranslator]: Completed translation [2021-05-02 21:40:14,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14 WrapperNode [2021-05-02 21:40:14,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 21:40:14,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 21:40:14,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 21:40:14,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 21:40:14,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... [2021-05-02 21:40:14,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 21:40:14,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 21:40:14,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 21:40:14,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 21:40:14,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:40:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 21:40:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 21:40:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 21:40:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 21:40:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 21:40:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 21:40:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 21:40:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 21:40:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 21:40:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 21:40:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 21:40:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 21:40:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 21:40:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 21:40:15,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 21:40:15,039 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 21:40:15,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:40:15 BoogieIcfgContainer [2021-05-02 21:40:15,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 21:40:15,041 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 21:40:15,041 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 21:40:15,041 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 21:40:15,043 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:40:15" (1/1) ... [2021-05-02 21:40:15,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:40:15 BasicIcfg [2021-05-02 21:40:15,056 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 21:40:15,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 21:40:15,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 21:40:15,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 21:40:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 09:40:14" (1/4) ... [2021-05-02 21:40:15,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab82406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:40:15, skipping insertion in model container [2021-05-02 21:40:15,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:40:14" (2/4) ... [2021-05-02 21:40:15,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab82406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:40:15, skipping insertion in model container [2021-05-02 21:40:15,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:40:15" (3/4) ... [2021-05-02 21:40:15,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab82406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 09:40:15, skipping insertion in model container [2021-05-02 21:40:15,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:40:15" (4/4) ... [2021-05-02 21:40:15,060 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.cJordan [2021-05-02 21:40:15,063 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 21:40:15,066 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 21:40:15,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 21:40:15,086 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 21:40:15,086 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 21:40:15,086 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 21:40:15,086 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 21:40:15,086 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 21:40:15,087 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 21:40:15,087 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 21:40:15,087 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 21:40:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:40:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 21:40:15,100 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:15,101 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:15,101 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2021-05-02 21:40:15,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:15,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241830149] [2021-05-02 21:40:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 21:40:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:15,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 21:40:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:15,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 21:40:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:15,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:15,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241830149] [2021-05-02 21:40:15,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241830149] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:40:15,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:40:15,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 21:40:15,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099133727] [2021-05-02 21:40:15,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 21:40:15,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:15,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 21:40:15,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:40:15,338 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:40:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:15,401 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 21:40:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 21:40:15,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-02 21:40:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:15,407 INFO L225 Difference]: With dead ends: 31 [2021-05-02 21:40:15,407 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 21:40:15,409 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:40:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 21:40:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-02 21:40:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:40:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-02 21:40:15,434 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-05-02 21:40:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:15,434 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-02 21:40:15,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:40:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-02 21:40:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 21:40:15,436 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:15,436 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:15,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 21:40:15,437 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2021-05-02 21:40:15,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:15,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812943148] [2021-05-02 21:40:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:15,463 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:15,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25688762] [2021-05-02 21:40:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:15,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 21:40:15,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:15,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:15,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:15,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:15,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:15,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:15,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:15,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812943148] [2021-05-02 21:40:15,680 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:15,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25688762] [2021-05-02 21:40:15,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25688762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:40:15,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:40:15,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 21:40:15,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637125604] [2021-05-02 21:40:15,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 21:40:15,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 21:40:15,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:40:15,684 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:40:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:15,693 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-02 21:40:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 21:40:15,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 21:40:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:15,695 INFO L225 Difference]: With dead ends: 27 [2021-05-02 21:40:15,695 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 21:40:15,697 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:40:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 21:40:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 21:40:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:40:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-02 21:40:15,703 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-05-02 21:40:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:15,704 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-02 21:40:15,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:40:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-02 21:40:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 21:40:15,709 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:15,709 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:15,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 21:40:15,925 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2021-05-02 21:40:15,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:15,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017863620] [2021-05-02 21:40:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:15,941 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:15,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206105064] [2021-05-02 21:40:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:15,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 21:40:15,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:16,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:40:16,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:16,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017863620] [2021-05-02 21:40:16,091 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:16,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206105064] [2021-05-02 21:40:16,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206105064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:16,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:16,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 21:40:16,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613863341] [2021-05-02 21:40:16,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 21:40:16,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:16,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 21:40:16,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:40:16,093 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:40:16,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:16,159 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-05-02 21:40:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:40:16,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 21:40:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:16,161 INFO L225 Difference]: With dead ends: 35 [2021-05-02 21:40:16,161 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 21:40:16,161 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:40:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 21:40:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-05-02 21:40:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 21:40:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-02 21:40:16,164 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2021-05-02 21:40:16,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:16,165 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-02 21:40:16,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:40:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-02 21:40:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:40:16,165 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:16,165 INFO L523 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] [2021-05-02 21:40:16,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:16,381 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:16,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2021-05-02 21:40:16,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:16,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361695241] [2021-05-02 21:40:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:16,389 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:16,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389014978] [2021-05-02 21:40:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:16,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 21:40:16,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:16,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:40:16,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:16,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361695241] [2021-05-02 21:40:16,578 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:16,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389014978] [2021-05-02 21:40:16,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389014978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:16,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:16,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 21:40:16,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044608295] [2021-05-02 21:40:16,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 21:40:16,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:16,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 21:40:16,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:40:16,580 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:40:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:16,716 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-05-02 21:40:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:40:16,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-05-02 21:40:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:16,719 INFO L225 Difference]: With dead ends: 37 [2021-05-02 21:40:16,719 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 21:40:16,721 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-05-02 21:40:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 21:40:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-05-02 21:40:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:40:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-05-02 21:40:16,730 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-05-02 21:40:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:16,730 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-05-02 21:40:16,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:40:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-05-02 21:40:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-02 21:40:16,731 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:16,732 INFO L523 BasicCegarLoop]: trace histogram [2, 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] [2021-05-02 21:40:16,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:16,946 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2021-05-02 21:40:16,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:16,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528894604] [2021-05-02 21:40:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:16,954 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:16,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101006816] [2021-05-02 21:40:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:16,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 21:40:17,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:17,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:17,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:17,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528894604] [2021-05-02 21:40:17,069 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:17,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101006816] [2021-05-02 21:40:17,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101006816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:17,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:17,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 21:40:17,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286008386] [2021-05-02 21:40:17,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 21:40:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 21:40:17,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 21:40:17,070 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:40:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:17,094 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 21:40:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 21:40:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-05-02 21:40:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:17,095 INFO L225 Difference]: With dead ends: 38 [2021-05-02 21:40:17,095 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 21:40:17,095 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:40:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 21:40:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 21:40:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 21:40:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 21:40:17,098 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2021-05-02 21:40:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:17,098 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 21:40:17,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:40:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 21:40:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 21:40:17,099 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:17,099 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:17,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:17,313 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:17,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1377493560, now seen corresponding path program 2 times [2021-05-02 21:40:17,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:17,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199175830] [2021-05-02 21:40:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:17,321 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:17,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947200241] [2021-05-02 21:40:17,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:17,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:17,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:17,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 21:40:17,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:17,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:17,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199175830] [2021-05-02 21:40:17,457 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:17,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947200241] [2021-05-02 21:40:17,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947200241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:17,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:17,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 21:40:17,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361562641] [2021-05-02 21:40:17,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 21:40:17,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:17,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 21:40:17,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:40:17,458 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 21:40:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:17,491 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-05-02 21:40:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:40:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2021-05-02 21:40:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:17,492 INFO L225 Difference]: With dead ends: 47 [2021-05-02 21:40:17,492 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 21:40:17,492 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:40:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 21:40:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 21:40:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:40:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-05-02 21:40:17,495 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 41 [2021-05-02 21:40:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:17,495 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-05-02 21:40:17,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 21:40:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-05-02 21:40:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 21:40:17,496 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:17,496 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:17,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 21:40:17,696 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 489214531, now seen corresponding path program 3 times [2021-05-02 21:40:17,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:17,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470773134] [2021-05-02 21:40:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:17,703 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:17,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109608955] [2021-05-02 21:40:17,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:17,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 21:40:17,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:17,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 21:40:17,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:17,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:17,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:17,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470773134] [2021-05-02 21:40:17,857 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:17,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109608955] [2021-05-02 21:40:17,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109608955] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:17,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:17,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 21:40:17,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468042913] [2021-05-02 21:40:17,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 21:40:17,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 21:40:17,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 21:40:17,858 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-02 21:40:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:17,912 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-02 21:40:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 21:40:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2021-05-02 21:40:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:17,914 INFO L225 Difference]: With dead ends: 56 [2021-05-02 21:40:17,914 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 21:40:17,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:40:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 21:40:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 21:40:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 21:40:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 21:40:17,918 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2021-05-02 21:40:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:17,918 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 21:40:17,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-02 21:40:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 21:40:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 21:40:17,918 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:17,919 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:18,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:18,129 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 4 times [2021-05-02 21:40:18,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:18,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048922145] [2021-05-02 21:40:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:18,146 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:18,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263396995] [2021-05-02 21:40:18,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:18,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:18,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:18,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 21:40:18,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:18,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:18,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048922145] [2021-05-02 21:40:18,328 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:18,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263396995] [2021-05-02 21:40:18,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263396995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:18,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:18,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 21:40:18,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451729465] [2021-05-02 21:40:18,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 21:40:18,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:18,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 21:40:18,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:40:18,329 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-02 21:40:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:18,378 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-05-02 21:40:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 21:40:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 59 [2021-05-02 21:40:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:18,379 INFO L225 Difference]: With dead ends: 65 [2021-05-02 21:40:18,379 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 21:40:18,380 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:40:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 21:40:18,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-02 21:40:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 21:40:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-05-02 21:40:18,383 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59 [2021-05-02 21:40:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:18,383 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-05-02 21:40:18,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-02 21:40:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-05-02 21:40:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 21:40:18,384 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:18,384 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:18,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:18,599 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:18,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1572135395, now seen corresponding path program 5 times [2021-05-02 21:40:18,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:18,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741080222] [2021-05-02 21:40:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:18,606 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:18,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78258204] [2021-05-02 21:40:18,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:18,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 21:40:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:18,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 21:40:18,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:18,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:18,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:18,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741080222] [2021-05-02 21:40:18,785 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:18,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78258204] [2021-05-02 21:40:18,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78258204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:18,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:18,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 21:40:18,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802664312] [2021-05-02 21:40:18,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 21:40:18,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:18,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 21:40:18,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 21:40:18,787 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-02 21:40:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:18,857 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-02 21:40:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 21:40:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-05-02 21:40:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:18,859 INFO L225 Difference]: With dead ends: 74 [2021-05-02 21:40:18,859 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 21:40:18,859 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:40:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 21:40:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 21:40:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 11 states have call successors, (11), 10 states have call predecessors, (11), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:40:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-02 21:40:18,877 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2021-05-02 21:40:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:18,877 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-02 21:40:18,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-02 21:40:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-02 21:40:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 21:40:18,878 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:18,879 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:19,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 21:40:19,081 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:19,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1651262200, now seen corresponding path program 6 times [2021-05-02 21:40:19,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:19,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146979277] [2021-05-02 21:40:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:19,090 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:19,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799999181] [2021-05-02 21:40:19,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:19,143 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 21:40:19,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:19,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 21:40:19,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:19,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:19,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:19,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146979277] [2021-05-02 21:40:19,297 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:19,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799999181] [2021-05-02 21:40:19,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799999181] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:19,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:19,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 21:40:19,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061825030] [2021-05-02 21:40:19,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 21:40:19,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 21:40:19,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:40:19,299 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-02 21:40:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:19,363 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-05-02 21:40:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 21:40:19,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-05-02 21:40:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:19,364 INFO L225 Difference]: With dead ends: 83 [2021-05-02 21:40:19,364 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 21:40:19,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-02 21:40:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 21:40:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 21:40:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 21:40:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-05-02 21:40:19,367 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 77 [2021-05-02 21:40:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:19,368 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-05-02 21:40:19,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-02 21:40:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-05-02 21:40:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 21:40:19,368 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:19,369 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:19,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:19,585 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:19,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1720170109, now seen corresponding path program 7 times [2021-05-02 21:40:19,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:19,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42228972] [2021-05-02 21:40:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:19,591 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:19,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419912792] [2021-05-02 21:40:19,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:19,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 21:40:19,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 203 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:19,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:19,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42228972] [2021-05-02 21:40:19,785 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:19,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419912792] [2021-05-02 21:40:19,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419912792] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:19,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:19,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:40:19,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433989758] [2021-05-02 21:40:19,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:40:19,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:40:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:40:19,786 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-02 21:40:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:19,876 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-05-02 21:40:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 21:40:19,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 86 [2021-05-02 21:40:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:19,877 INFO L225 Difference]: With dead ends: 92 [2021-05-02 21:40:19,877 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 21:40:19,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-02 21:40:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 21:40:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 21:40:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 13 states have call successors, (13), 12 states have call predecessors, (13), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 21:40:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-02 21:40:19,881 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-05-02 21:40:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:19,881 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-02 21:40:19,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-02 21:40:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-02 21:40:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 21:40:19,882 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:19,882 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:20,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:20,099 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:20,100 INFO L82 PathProgramCache]: Analyzing trace with hash -327979176, now seen corresponding path program 8 times [2021-05-02 21:40:20,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:20,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909450455] [2021-05-02 21:40:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:20,105 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:20,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606375438] [2021-05-02 21:40:20,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:20,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:20,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:20,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 21:40:20,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:20,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:20,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:20,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909450455] [2021-05-02 21:40:20,335 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:20,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606375438] [2021-05-02 21:40:20,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606375438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:20,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:20,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 21:40:20,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250639569] [2021-05-02 21:40:20,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 21:40:20,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 21:40:20,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:40:20,336 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-02 21:40:20,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:20,431 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-05-02 21:40:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 21:40:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 95 [2021-05-02 21:40:20,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:20,432 INFO L225 Difference]: With dead ends: 101 [2021-05-02 21:40:20,432 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 21:40:20,432 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-02 21:40:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 21:40:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-02 21:40:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 14 states have call successors, (14), 13 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 21:40:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-05-02 21:40:20,435 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 95 [2021-05-02 21:40:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:20,436 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-05-02 21:40:20,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-02 21:40:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-05-02 21:40:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-02 21:40:20,437 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:20,437 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:20,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 21:40:20,657 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1572009693, now seen corresponding path program 9 times [2021-05-02 21:40:20,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:20,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517545410] [2021-05-02 21:40:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:20,664 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:20,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769788079] [2021-05-02 21:40:20,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:20,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 21:40:20,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:20,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 21:40:20,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:20,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:20,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:20,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517545410] [2021-05-02 21:40:20,909 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:20,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769788079] [2021-05-02 21:40:20,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769788079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:20,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:20,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 21:40:20,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107886163] [2021-05-02 21:40:20,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 21:40:20,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:20,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 21:40:20,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 21:40:20,911 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-02 21:40:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:21,032 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-05-02 21:40:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 21:40:21,032 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 104 [2021-05-02 21:40:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:21,033 INFO L225 Difference]: With dead ends: 110 [2021-05-02 21:40:21,033 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 21:40:21,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-02 21:40:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 21:40:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-02 21:40:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 21:40:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-02 21:40:21,036 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 104 [2021-05-02 21:40:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:21,037 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-02 21:40:21,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-02 21:40:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-02 21:40:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 21:40:21,038 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:21,038 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:21,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 21:40:21,253 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 10 times [2021-05-02 21:40:21,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:21,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219360952] [2021-05-02 21:40:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:21,259 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:21,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20656486] [2021-05-02 21:40:21,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:21,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:21,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:21,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 21:40:21,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:21,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:21,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219360952] [2021-05-02 21:40:21,486 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:21,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20656486] [2021-05-02 21:40:21,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20656486] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:21,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:21,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 21:40:21,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303108899] [2021-05-02 21:40:21,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 21:40:21,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 21:40:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:40:21,488 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-02 21:40:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:21,606 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2021-05-02 21:40:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 21:40:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) Word has length 113 [2021-05-02 21:40:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:21,607 INFO L225 Difference]: With dead ends: 119 [2021-05-02 21:40:21,607 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 21:40:21,607 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-05-02 21:40:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 21:40:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-02 21:40:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 states have internal predecessors, (101), 16 states have call successors, (16), 15 states have call predecessors, (16), 13 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 21:40:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2021-05-02 21:40:21,610 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 113 [2021-05-02 21:40:21,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:21,610 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2021-05-02 21:40:21,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-02 21:40:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2021-05-02 21:40:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 21:40:21,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:21,611 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:21,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 21:40:21,824 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1200431299, now seen corresponding path program 11 times [2021-05-02 21:40:21,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:21,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798713830] [2021-05-02 21:40:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:21,830 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:21,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219988986] [2021-05-02 21:40:21,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:21,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 21:40:21,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:21,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 21:40:21,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:21,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 22 proven. 517 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:22,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:22,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798713830] [2021-05-02 21:40:22,123 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:22,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219988986] [2021-05-02 21:40:22,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219988986] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:22,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:22,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 21:40:22,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589180213] [2021-05-02 21:40:22,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 21:40:22,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:22,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 21:40:22,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 21:40:22,125 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-02 21:40:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:22,269 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-05-02 21:40:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 21:40:22,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) Word has length 122 [2021-05-02 21:40:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:22,270 INFO L225 Difference]: With dead ends: 128 [2021-05-02 21:40:22,270 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 21:40:22,270 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 140.4ms TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-05-02 21:40:22,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 21:40:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 21:40:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 96 states have internal predecessors, (109), 17 states have call successors, (17), 16 states have call predecessors, (17), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:40:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-05-02 21:40:22,273 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 122 [2021-05-02 21:40:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:22,273 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-05-02 21:40:22,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-02 21:40:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-05-02 21:40:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 21:40:22,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:22,274 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:22,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:22,489 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1791180776, now seen corresponding path program 12 times [2021-05-02 21:40:22,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:22,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736020824] [2021-05-02 21:40:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:22,495 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:22,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907650273] [2021-05-02 21:40:22,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:22,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 21:40:22,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 21:40:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:22,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 24 proven. 618 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:22,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:22,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736020824] [2021-05-02 21:40:22,787 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:22,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907650273] [2021-05-02 21:40:22,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907650273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:22,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:22,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-02 21:40:22,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947999576] [2021-05-02 21:40:22,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 21:40:22,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:22,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 21:40:22,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 21:40:22,788 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-02 21:40:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:22,967 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2021-05-02 21:40:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 21:40:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) Word has length 131 [2021-05-02 21:40:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:22,968 INFO L225 Difference]: With dead ends: 137 [2021-05-02 21:40:22,968 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 21:40:22,968 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 158.8ms TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-05-02 21:40:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 21:40:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-02 21:40:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 18 states have call successors, (18), 17 states have call predecessors, (18), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 21:40:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2021-05-02 21:40:22,971 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 131 [2021-05-02 21:40:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:22,971 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2021-05-02 21:40:22,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-02 21:40:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2021-05-02 21:40:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-05-02 21:40:22,972 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:22,972 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:23,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 21:40:23,188 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash -166555549, now seen corresponding path program 13 times [2021-05-02 21:40:23,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:23,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105563347] [2021-05-02 21:40:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:23,198 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:23,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951454798] [2021-05-02 21:40:23,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:23,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 21:40:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:23,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 26 proven. 728 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:23,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:23,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105563347] [2021-05-02 21:40:23,493 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:23,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951454798] [2021-05-02 21:40:23,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951454798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:23,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:23,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 21:40:23,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061489796] [2021-05-02 21:40:23,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 21:40:23,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 21:40:23,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 21:40:23,494 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-02 21:40:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:23,674 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2021-05-02 21:40:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 21:40:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) Word has length 140 [2021-05-02 21:40:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:23,675 INFO L225 Difference]: With dead ends: 146 [2021-05-02 21:40:23,675 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 21:40:23,675 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 175.5ms TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-05-02 21:40:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 21:40:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-02 21:40:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 110 states have internal predecessors, (125), 19 states have call successors, (19), 18 states have call predecessors, (19), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 21:40:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2021-05-02 21:40:23,686 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 140 [2021-05-02 21:40:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:23,687 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2021-05-02 21:40:23,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-02 21:40:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2021-05-02 21:40:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 21:40:23,687 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:23,687 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:23,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 21:40:23,888 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:23,888 INFO L82 PathProgramCache]: Analyzing trace with hash -229972872, now seen corresponding path program 14 times [2021-05-02 21:40:23,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:23,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443619709] [2021-05-02 21:40:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:23,894 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:23,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282837239] [2021-05-02 21:40:23,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:23,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:23,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:23,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 21:40:23,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 28 proven. 847 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:24,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:24,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443619709] [2021-05-02 21:40:24,201 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:24,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282837239] [2021-05-02 21:40:24,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282837239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:24,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:24,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 21:40:24,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893178997] [2021-05-02 21:40:24,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 21:40:24,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 21:40:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 21:40:24,205 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-02 21:40:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:24,388 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2021-05-02 21:40:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 21:40:24,388 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) Word has length 149 [2021-05-02 21:40:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:24,390 INFO L225 Difference]: With dead ends: 155 [2021-05-02 21:40:24,390 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 21:40:24,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 180.3ms TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-05-02 21:40:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 21:40:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-02 21:40:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 117 states have internal predecessors, (133), 20 states have call successors, (20), 19 states have call predecessors, (20), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 21:40:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2021-05-02 21:40:24,394 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 149 [2021-05-02 21:40:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:24,394 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2021-05-02 21:40:24,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-02 21:40:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2021-05-02 21:40:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-05-02 21:40:24,395 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:24,395 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:24,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 21:40:24,595 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1480022019, now seen corresponding path program 15 times [2021-05-02 21:40:24,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:24,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217380126] [2021-05-02 21:40:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:24,601 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:24,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906675820] [2021-05-02 21:40:24,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:24,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 21:40:24,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:24,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 21:40:24,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 30 proven. 975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:24,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:24,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217380126] [2021-05-02 21:40:24,971 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:24,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906675820] [2021-05-02 21:40:24,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906675820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:24,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:24,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 21:40:24,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693433499] [2021-05-02 21:40:24,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 21:40:24,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:24,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 21:40:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 21:40:24,972 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-02 21:40:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:25,175 INFO L93 Difference]: Finished difference Result 164 states and 181 transitions. [2021-05-02 21:40:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 21:40:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) Word has length 158 [2021-05-02 21:40:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:25,177 INFO L225 Difference]: With dead ends: 164 [2021-05-02 21:40:25,177 INFO L226 Difference]: Without dead ends: 164 [2021-05-02 21:40:25,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 21:40:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-02 21:40:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-02 21:40:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 124 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 21:40:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2021-05-02 21:40:25,180 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 158 [2021-05-02 21:40:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:25,180 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2021-05-02 21:40:25,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-02 21:40:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2021-05-02 21:40:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 21:40:25,181 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:25,181 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:25,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:25,393 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:25,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2105323736, now seen corresponding path program 16 times [2021-05-02 21:40:25,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:25,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112655641] [2021-05-02 21:40:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:25,398 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:25,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496087748] [2021-05-02 21:40:25,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:25,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:25,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:25,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 21:40:25,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:25,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 32 proven. 1112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:25,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:25,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112655641] [2021-05-02 21:40:25,823 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:25,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496087748] [2021-05-02 21:40:25,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496087748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:25,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:25,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 21:40:25,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727279140] [2021-05-02 21:40:25,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 21:40:25,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:25,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 21:40:25,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 21:40:25,825 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-02 21:40:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:26,039 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-05-02 21:40:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 21:40:26,040 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) Word has length 167 [2021-05-02 21:40:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:26,040 INFO L225 Difference]: With dead ends: 173 [2021-05-02 21:40:26,040 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 21:40:26,041 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 237.2ms TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 21:40:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 21:40:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-05-02 21:40:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 21 states have call predecessors, (22), 19 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 21:40:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-05-02 21:40:26,044 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 167 [2021-05-02 21:40:26,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:26,044 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-05-02 21:40:26,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-02 21:40:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-05-02 21:40:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-05-02 21:40:26,045 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:26,045 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:26,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:26,253 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:26,253 INFO L82 PathProgramCache]: Analyzing trace with hash -170559581, now seen corresponding path program 17 times [2021-05-02 21:40:26,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:26,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446031994] [2021-05-02 21:40:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:26,260 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:26,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859238075] [2021-05-02 21:40:26,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:26,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 21:40:26,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:26,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 21:40:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:26,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 34 proven. 1258 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:26,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:26,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446031994] [2021-05-02 21:40:26,643 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:26,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859238075] [2021-05-02 21:40:26,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859238075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:26,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:26,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 21:40:26,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762532898] [2021-05-02 21:40:26,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 21:40:26,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 21:40:26,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 21:40:26,644 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-02 21:40:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:26,880 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2021-05-02 21:40:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 21:40:26,881 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) Word has length 176 [2021-05-02 21:40:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:26,881 INFO L225 Difference]: With dead ends: 182 [2021-05-02 21:40:26,881 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 21:40:26,882 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 241.0ms TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 21:40:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 21:40:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-02 21:40:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 23 states have call successors, (23), 22 states have call predecessors, (23), 20 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 21:40:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2021-05-02 21:40:26,885 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 176 [2021-05-02 21:40:26,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:26,885 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2021-05-02 21:40:26,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-02 21:40:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2021-05-02 21:40:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 21:40:26,886 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:26,886 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:27,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 21:40:27,097 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -466082504, now seen corresponding path program 18 times [2021-05-02 21:40:27,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:27,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661588084] [2021-05-02 21:40:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:27,102 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:27,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406978587] [2021-05-02 21:40:27,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:27,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 21:40:27,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 21:40:27,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 36 proven. 1413 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:27,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:27,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661588084] [2021-05-02 21:40:27,566 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:27,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406978587] [2021-05-02 21:40:27,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406978587] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:27,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:27,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-02 21:40:27,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599934340] [2021-05-02 21:40:27,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 21:40:27,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 21:40:27,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 21:40:27,567 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-02 21:40:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:27,825 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-05-02 21:40:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 21:40:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) Word has length 185 [2021-05-02 21:40:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:27,827 INFO L225 Difference]: With dead ends: 191 [2021-05-02 21:40:27,827 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 21:40:27,827 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 273.4ms TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 21:40:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 21:40:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-05-02 21:40:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 145 states have internal predecessors, (165), 24 states have call successors, (24), 23 states have call predecessors, (24), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 21:40:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2021-05-02 21:40:27,831 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 185 [2021-05-02 21:40:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:27,831 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2021-05-02 21:40:27,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-02 21:40:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2021-05-02 21:40:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-02 21:40:27,832 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:27,832 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:28,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 21:40:28,045 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash -733548733, now seen corresponding path program 19 times [2021-05-02 21:40:28,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:28,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469984784] [2021-05-02 21:40:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:28,050 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:28,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919595840] [2021-05-02 21:40:28,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:28,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 21:40:28,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:28,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 38 proven. 1577 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:28,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:28,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469984784] [2021-05-02 21:40:28,478 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:28,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919595840] [2021-05-02 21:40:28,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919595840] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:28,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:28,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-05-02 21:40:28,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038177469] [2021-05-02 21:40:28,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 21:40:28,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:28,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 21:40:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 21:40:28,480 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-02 21:40:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:28,745 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2021-05-02 21:40:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 21:40:28,746 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) Word has length 194 [2021-05-02 21:40:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:28,747 INFO L225 Difference]: With dead ends: 200 [2021-05-02 21:40:28,747 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 21:40:28,747 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 302.4ms TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 21:40:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 21:40:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 21:40:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.138157894736842) internal successors, (173), 152 states have internal predecessors, (173), 25 states have call successors, (25), 24 states have call predecessors, (25), 22 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 21:40:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 221 transitions. [2021-05-02 21:40:28,750 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 221 transitions. Word has length 194 [2021-05-02 21:40:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:28,751 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 221 transitions. [2021-05-02 21:40:28,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-02 21:40:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 221 transitions. [2021-05-02 21:40:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 21:40:28,752 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:28,752 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:28,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:28,961 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:28,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2040315496, now seen corresponding path program 20 times [2021-05-02 21:40:28,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:28,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742343583] [2021-05-02 21:40:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:28,967 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:28,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034912967] [2021-05-02 21:40:28,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:29,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:29,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:29,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 21:40:29,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:29,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 40 proven. 1750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:29,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:29,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742343583] [2021-05-02 21:40:29,414 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:29,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034912967] [2021-05-02 21:40:29,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034912967] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:29,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:29,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-05-02 21:40:29,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040207456] [2021-05-02 21:40:29,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 21:40:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 21:40:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 21:40:29,416 INFO L87 Difference]: Start difference. First operand 200 states and 221 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-02 21:40:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:29,696 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2021-05-02 21:40:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 21:40:29,696 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) Word has length 203 [2021-05-02 21:40:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:29,697 INFO L225 Difference]: With dead ends: 209 [2021-05-02 21:40:29,697 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 21:40:29,697 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 332.0ms TimeCoverageRelationStatistics Valid=715, Invalid=1177, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 21:40:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 21:40:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-05-02 21:40:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 159 states have internal predecessors, (181), 26 states have call successors, (26), 25 states have call predecessors, (26), 23 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 21:40:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2021-05-02 21:40:29,703 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 203 [2021-05-02 21:40:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:29,703 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2021-05-02 21:40:29,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-02 21:40:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2021-05-02 21:40:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-05-02 21:40:29,708 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:29,708 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:29,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 21:40:29,908 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:29,908 INFO L82 PathProgramCache]: Analyzing trace with hash 375766755, now seen corresponding path program 21 times [2021-05-02 21:40:29,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:29,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673744568] [2021-05-02 21:40:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:29,917 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:29,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61358913] [2021-05-02 21:40:29,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:30,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 21:40:30,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:30,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 21:40:30,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:30,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 42 proven. 1932 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:30,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:30,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673744568] [2021-05-02 21:40:30,447 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:30,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61358913] [2021-05-02 21:40:30,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61358913] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:30,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:30,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-05-02 21:40:30,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564397132] [2021-05-02 21:40:30,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 21:40:30,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:30,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 21:40:30,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 21:40:30,449 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-02 21:40:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:30,763 INFO L93 Difference]: Finished difference Result 218 states and 241 transitions. [2021-05-02 21:40:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 21:40:30,763 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) Word has length 212 [2021-05-02 21:40:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:30,764 INFO L225 Difference]: With dead ends: 218 [2021-05-02 21:40:30,764 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 21:40:30,765 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 360.2ms TimeCoverageRelationStatistics Valid=782, Invalid=1288, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 21:40:30,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 21:40:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-02 21:40:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 166 states have (on average 1.1385542168674698) internal successors, (189), 166 states have internal predecessors, (189), 27 states have call successors, (27), 26 states have call predecessors, (27), 24 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 21:40:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 241 transitions. [2021-05-02 21:40:30,769 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 241 transitions. Word has length 212 [2021-05-02 21:40:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:30,769 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 241 transitions. [2021-05-02 21:40:30,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-02 21:40:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 241 transitions. [2021-05-02 21:40:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 21:40:30,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:30,770 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:30,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:30,985 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash -698087944, now seen corresponding path program 22 times [2021-05-02 21:40:30,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:30,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390761587] [2021-05-02 21:40:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:30,993 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:30,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143978157] [2021-05-02 21:40:30,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:31,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:31,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:31,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 21:40:31,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:31,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 44 proven. 2123 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:31,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:31,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390761587] [2021-05-02 21:40:31,487 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:31,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143978157] [2021-05-02 21:40:31,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143978157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:31,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:31,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-05-02 21:40:31,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349584157] [2021-05-02 21:40:31,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 21:40:31,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:31,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 21:40:31,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 21:40:31,489 INFO L87 Difference]: Start difference. First operand 218 states and 241 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-02 21:40:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:31,840 INFO L93 Difference]: Finished difference Result 227 states and 251 transitions. [2021-05-02 21:40:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 21:40:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) Word has length 221 [2021-05-02 21:40:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:31,842 INFO L225 Difference]: With dead ends: 227 [2021-05-02 21:40:31,842 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 21:40:31,842 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 393.8ms TimeCoverageRelationStatistics Valid=852, Invalid=1404, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 21:40:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 21:40:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-05-02 21:40:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 173 states have (on average 1.138728323699422) internal successors, (197), 173 states have internal predecessors, (197), 28 states have call successors, (28), 27 states have call predecessors, (28), 25 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 21:40:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2021-05-02 21:40:31,846 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 221 [2021-05-02 21:40:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:31,846 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2021-05-02 21:40:31,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-02 21:40:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2021-05-02 21:40:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-05-02 21:40:31,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:31,847 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:32,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 21:40:32,061 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:32,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:32,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1668553085, now seen corresponding path program 23 times [2021-05-02 21:40:32,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:32,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303605587] [2021-05-02 21:40:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:32,071 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:32,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123318072] [2021-05-02 21:40:32,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:32,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 21:40:32,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:32,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 21:40:32,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 46 proven. 2323 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:32,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:32,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303605587] [2021-05-02 21:40:32,611 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:32,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123318072] [2021-05-02 21:40:32,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123318072] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:32,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:32,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-05-02 21:40:32,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102335996] [2021-05-02 21:40:32,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 21:40:32,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:32,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 21:40:32,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 21:40:32,612 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-02 21:40:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:32,941 INFO L93 Difference]: Finished difference Result 236 states and 261 transitions. [2021-05-02 21:40:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 21:40:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) Word has length 230 [2021-05-02 21:40:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:32,943 INFO L225 Difference]: With dead ends: 236 [2021-05-02 21:40:32,943 INFO L226 Difference]: Without dead ends: 236 [2021-05-02 21:40:32,943 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 403.6ms TimeCoverageRelationStatistics Valid=925, Invalid=1525, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 21:40:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-02 21:40:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-05-02 21:40:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 180 states have (on average 1.1388888888888888) internal successors, (205), 180 states have internal predecessors, (205), 29 states have call successors, (29), 28 states have call predecessors, (29), 26 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 21:40:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2021-05-02 21:40:32,948 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 230 [2021-05-02 21:40:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:32,948 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2021-05-02 21:40:32,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-02 21:40:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2021-05-02 21:40:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 21:40:32,949 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:32,949 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:33,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 21:40:33,165 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:33,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1189055912, now seen corresponding path program 24 times [2021-05-02 21:40:33,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:33,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140875215] [2021-05-02 21:40:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:33,171 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:33,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620217262] [2021-05-02 21:40:33,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:33,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 21:40:33,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:33,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 21:40:33,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:33,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 48 proven. 2532 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:33,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:33,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140875215] [2021-05-02 21:40:33,788 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:33,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620217262] [2021-05-02 21:40:33,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620217262] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:33,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:33,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-05-02 21:40:33,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167155028] [2021-05-02 21:40:33,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 21:40:33,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 21:40:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 21:40:33,789 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-02 21:40:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:34,158 INFO L93 Difference]: Finished difference Result 245 states and 271 transitions. [2021-05-02 21:40:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 21:40:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) Word has length 239 [2021-05-02 21:40:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:34,159 INFO L225 Difference]: With dead ends: 245 [2021-05-02 21:40:34,159 INFO L226 Difference]: Without dead ends: 245 [2021-05-02 21:40:34,160 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 442.9ms TimeCoverageRelationStatistics Valid=1001, Invalid=1651, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 21:40:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-02 21:40:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-05-02 21:40:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 187 states have (on average 1.13903743315508) internal successors, (213), 187 states have internal predecessors, (213), 30 states have call successors, (30), 29 states have call predecessors, (30), 27 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 21:40:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 271 transitions. [2021-05-02 21:40:34,163 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 271 transitions. Word has length 239 [2021-05-02 21:40:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:34,164 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 271 transitions. [2021-05-02 21:40:34,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-02 21:40:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 271 transitions. [2021-05-02 21:40:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-05-02 21:40:34,164 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:34,165 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:34,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 21:40:34,373 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:34,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1533843933, now seen corresponding path program 25 times [2021-05-02 21:40:34,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:34,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499583609] [2021-05-02 21:40:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:34,378 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:34,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776203024] [2021-05-02 21:40:34,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:34,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 21:40:34,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:34,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 50 proven. 2750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:34,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:34,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499583609] [2021-05-02 21:40:34,939 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:34,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776203024] [2021-05-02 21:40:34,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776203024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:34,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:34,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-05-02 21:40:34,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135669410] [2021-05-02 21:40:34,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 21:40:34,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:34,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 21:40:34,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 21:40:34,940 INFO L87 Difference]: Start difference. First operand 245 states and 271 transitions. Second operand has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-02 21:40:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:35,322 INFO L93 Difference]: Finished difference Result 254 states and 281 transitions. [2021-05-02 21:40:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 21:40:35,323 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) Word has length 248 [2021-05-02 21:40:35,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:35,324 INFO L225 Difference]: With dead ends: 254 [2021-05-02 21:40:35,324 INFO L226 Difference]: Without dead ends: 254 [2021-05-02 21:40:35,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 475.5ms TimeCoverageRelationStatistics Valid=1080, Invalid=1782, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 21:40:35,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-02 21:40:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-02 21:40:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.1391752577319587) internal successors, (221), 194 states have internal predecessors, (221), 31 states have call successors, (31), 30 states have call predecessors, (31), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 21:40:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 281 transitions. [2021-05-02 21:40:35,328 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 281 transitions. Word has length 248 [2021-05-02 21:40:35,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:35,328 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 281 transitions. [2021-05-02 21:40:35,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-02 21:40:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 281 transitions. [2021-05-02 21:40:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 21:40:35,329 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:35,329 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:35,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 21:40:35,545 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash -436304200, now seen corresponding path program 26 times [2021-05-02 21:40:35,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:35,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323603918] [2021-05-02 21:40:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:35,553 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:35,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136152851] [2021-05-02 21:40:35,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:35,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:35,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:35,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 21:40:35,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:35,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:35,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 52 proven. 2977 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:36,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:36,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323603918] [2021-05-02 21:40:36,148 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:36,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136152851] [2021-05-02 21:40:36,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136152851] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:36,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:36,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-05-02 21:40:36,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836401750] [2021-05-02 21:40:36,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 21:40:36,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:36,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 21:40:36,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 21:40:36,149 INFO L87 Difference]: Start difference. First operand 254 states and 281 transitions. Second operand has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-02 21:40:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:36,557 INFO L93 Difference]: Finished difference Result 263 states and 291 transitions. [2021-05-02 21:40:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 21:40:36,557 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) Word has length 257 [2021-05-02 21:40:36,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:36,558 INFO L225 Difference]: With dead ends: 263 [2021-05-02 21:40:36,558 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 21:40:36,559 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 519.4ms TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 21:40:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 21:40:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-05-02 21:40:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 201 states have (on average 1.1393034825870647) internal successors, (229), 201 states have internal predecessors, (229), 32 states have call successors, (32), 31 states have call predecessors, (32), 29 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 21:40:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-05-02 21:40:36,562 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 257 [2021-05-02 21:40:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:36,563 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-05-02 21:40:36,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-02 21:40:36,563 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-05-02 21:40:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-05-02 21:40:36,564 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:36,564 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:36,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:36,779 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1775648195, now seen corresponding path program 27 times [2021-05-02 21:40:36,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:36,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722253502] [2021-05-02 21:40:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:36,786 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:36,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082751539] [2021-05-02 21:40:36,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:36,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 21:40:36,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:36,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 21:40:36,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:36,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:36,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3271 backedges. 54 proven. 3213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:37,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:37,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722253502] [2021-05-02 21:40:37,514 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:37,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082751539] [2021-05-02 21:40:37,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082751539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:37,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:37,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-05-02 21:40:37,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336282126] [2021-05-02 21:40:37,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 21:40:37,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:37,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 21:40:37,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 21:40:37,516 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-02 21:40:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:37,934 INFO L93 Difference]: Finished difference Result 272 states and 301 transitions. [2021-05-02 21:40:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 21:40:37,934 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) Word has length 266 [2021-05-02 21:40:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:37,935 INFO L225 Difference]: With dead ends: 272 [2021-05-02 21:40:37,935 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 21:40:37,936 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 571.7ms TimeCoverageRelationStatistics Valid=1247, Invalid=2059, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 21:40:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 21:40:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 21:40:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 208 states have (on average 1.1394230769230769) internal successors, (237), 208 states have internal predecessors, (237), 33 states have call successors, (33), 32 states have call predecessors, (33), 30 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 21:40:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2021-05-02 21:40:37,939 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 266 [2021-05-02 21:40:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:37,940 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2021-05-02 21:40:37,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-02 21:40:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2021-05-02 21:40:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 21:40:37,941 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:37,941 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:38,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:38,153 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:38,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1189364504, now seen corresponding path program 28 times [2021-05-02 21:40:38,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:38,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394429026] [2021-05-02 21:40:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:38,158 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:38,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533072251] [2021-05-02 21:40:38,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:38,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:38,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:38,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 21:40:38,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:38,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 56 proven. 3458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:38,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:38,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394429026] [2021-05-02 21:40:38,807 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:38,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533072251] [2021-05-02 21:40:38,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533072251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:38,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:38,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-05-02 21:40:38,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224296018] [2021-05-02 21:40:38,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 21:40:38,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 21:40:38,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 21:40:38,808 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-02 21:40:39,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:39,280 INFO L93 Difference]: Finished difference Result 281 states and 311 transitions. [2021-05-02 21:40:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 21:40:39,281 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) Word has length 275 [2021-05-02 21:40:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:39,281 INFO L225 Difference]: With dead ends: 281 [2021-05-02 21:40:39,282 INFO L226 Difference]: Without dead ends: 281 [2021-05-02 21:40:39,282 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 569.7ms TimeCoverageRelationStatistics Valid=1335, Invalid=2205, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 21:40:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-02 21:40:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-05-02 21:40:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 215 states have (on average 1.1395348837209303) internal successors, (245), 215 states have internal predecessors, (245), 34 states have call successors, (34), 33 states have call predecessors, (34), 31 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 21:40:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 311 transitions. [2021-05-02 21:40:39,286 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 311 transitions. Word has length 275 [2021-05-02 21:40:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:39,286 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 311 transitions. [2021-05-02 21:40:39,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-02 21:40:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 311 transitions. [2021-05-02 21:40:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-05-02 21:40:39,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:39,287 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:39,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:39,501 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:39,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:39,501 INFO L82 PathProgramCache]: Analyzing trace with hash -986813085, now seen corresponding path program 29 times [2021-05-02 21:40:39,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:39,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355950937] [2021-05-02 21:40:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:39,512 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:39,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659937582] [2021-05-02 21:40:39,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:39,623 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 21:40:39,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:39,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 21:40:39,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:39,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:39,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3774 backedges. 58 proven. 3712 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:40,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:40,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355950937] [2021-05-02 21:40:40,215 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:40,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659937582] [2021-05-02 21:40:40,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659937582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:40,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:40,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-05-02 21:40:40,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309624116] [2021-05-02 21:40:40,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 21:40:40,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 21:40:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 21:40:40,217 INFO L87 Difference]: Start difference. First operand 281 states and 311 transitions. Second operand has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-02 21:40:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:40,690 INFO L93 Difference]: Finished difference Result 290 states and 321 transitions. [2021-05-02 21:40:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 21:40:40,691 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) Word has length 284 [2021-05-02 21:40:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:40,692 INFO L225 Difference]: With dead ends: 290 [2021-05-02 21:40:40,692 INFO L226 Difference]: Without dead ends: 290 [2021-05-02 21:40:40,692 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 618.1ms TimeCoverageRelationStatistics Valid=1426, Invalid=2356, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 21:40:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-02 21:40:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-02 21:40:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 222 states have (on average 1.1396396396396395) internal successors, (253), 222 states have internal predecessors, (253), 35 states have call successors, (35), 34 states have call predecessors, (35), 32 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 21:40:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 321 transitions. [2021-05-02 21:40:40,696 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 321 transitions. Word has length 284 [2021-05-02 21:40:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:40,696 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 321 transitions. [2021-05-02 21:40:40,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-02 21:40:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 321 transitions. [2021-05-02 21:40:40,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 21:40:40,697 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:40,697 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:40,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 21:40:40,905 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:40,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1480042360, now seen corresponding path program 30 times [2021-05-02 21:40:40,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:40,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272038415] [2021-05-02 21:40:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:40,912 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:40,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073612723] [2021-05-02 21:40:40,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:41,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 21:40:41,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:41,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 21:40:41,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:41,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4039 backedges. 60 proven. 3975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:41,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:41,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272038415] [2021-05-02 21:40:41,689 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:41,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073612723] [2021-05-02 21:40:41,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073612723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:41,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:41,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-05-02 21:40:41,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920269591] [2021-05-02 21:40:41,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 21:40:41,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:41,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 21:40:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 21:40:41,690 INFO L87 Difference]: Start difference. First operand 290 states and 321 transitions. Second operand has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-02 21:40:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:42,200 INFO L93 Difference]: Finished difference Result 299 states and 331 transitions. [2021-05-02 21:40:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 21:40:42,201 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) Word has length 293 [2021-05-02 21:40:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:42,202 INFO L225 Difference]: With dead ends: 299 [2021-05-02 21:40:42,202 INFO L226 Difference]: Without dead ends: 299 [2021-05-02 21:40:42,203 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 674.4ms TimeCoverageRelationStatistics Valid=1520, Invalid=2512, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 21:40:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-05-02 21:40:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-05-02 21:40:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 229 states have (on average 1.1397379912663756) internal successors, (261), 229 states have internal predecessors, (261), 36 states have call successors, (36), 35 states have call predecessors, (36), 33 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 21:40:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 331 transitions. [2021-05-02 21:40:42,206 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 331 transitions. Word has length 293 [2021-05-02 21:40:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:42,206 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 331 transitions. [2021-05-02 21:40:42,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-02 21:40:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 331 transitions. [2021-05-02 21:40:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-05-02 21:40:42,208 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:42,208 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:42,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:42,419 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -856296189, now seen corresponding path program 31 times [2021-05-02 21:40:42,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:42,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153010944] [2021-05-02 21:40:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:42,425 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:42,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995762160] [2021-05-02 21:40:42,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:42,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 21:40:42,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:42,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:42,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4313 backedges. 62 proven. 4247 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:43,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:43,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153010944] [2021-05-02 21:40:43,184 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:43,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995762160] [2021-05-02 21:40:43,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995762160] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:43,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:43,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-05-02 21:40:43,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197819630] [2021-05-02 21:40:43,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 21:40:43,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 21:40:43,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 21:40:43,186 INFO L87 Difference]: Start difference. First operand 299 states and 331 transitions. Second operand has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-02 21:40:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:43,715 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2021-05-02 21:40:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 21:40:43,717 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) Word has length 302 [2021-05-02 21:40:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:43,718 INFO L225 Difference]: With dead ends: 308 [2021-05-02 21:40:43,718 INFO L226 Difference]: Without dead ends: 308 [2021-05-02 21:40:43,719 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 698.6ms TimeCoverageRelationStatistics Valid=1617, Invalid=2673, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 21:40:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-05-02 21:40:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-05-02 21:40:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 236 states have internal predecessors, (269), 37 states have call successors, (37), 36 states have call predecessors, (37), 34 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 21:40:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 341 transitions. [2021-05-02 21:40:43,723 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 341 transitions. Word has length 302 [2021-05-02 21:40:43,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:43,723 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 341 transitions. [2021-05-02 21:40:43,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-02 21:40:43,723 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 341 transitions. [2021-05-02 21:40:43,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-02 21:40:43,724 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:43,724 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:43,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 21:40:43,933 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:43,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1998670888, now seen corresponding path program 32 times [2021-05-02 21:40:43,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:43,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254207775] [2021-05-02 21:40:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:43,938 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:43,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143801287] [2021-05-02 21:40:43,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:44,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:44,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:44,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 21:40:44,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:44,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4596 backedges. 64 proven. 4528 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:44,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:44,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254207775] [2021-05-02 21:40:44,727 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:44,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143801287] [2021-05-02 21:40:44,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143801287] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:44,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:44,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-05-02 21:40:44,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170857014] [2021-05-02 21:40:44,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 21:40:44,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:44,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 21:40:44,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 21:40:44,728 INFO L87 Difference]: Start difference. First operand 308 states and 341 transitions. Second operand has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-02 21:40:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:45,294 INFO L93 Difference]: Finished difference Result 317 states and 351 transitions. [2021-05-02 21:40:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 21:40:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) Word has length 311 [2021-05-02 21:40:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:45,295 INFO L225 Difference]: With dead ends: 317 [2021-05-02 21:40:45,295 INFO L226 Difference]: Without dead ends: 317 [2021-05-02 21:40:45,296 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 766.2ms TimeCoverageRelationStatistics Valid=1717, Invalid=2839, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 21:40:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-02 21:40:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-05-02 21:40:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.139917695473251) internal successors, (277), 243 states have internal predecessors, (277), 38 states have call successors, (38), 37 states have call predecessors, (38), 35 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 21:40:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2021-05-02 21:40:45,299 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 311 [2021-05-02 21:40:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:45,299 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2021-05-02 21:40:45,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-02 21:40:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2021-05-02 21:40:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-05-02 21:40:45,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:45,301 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:45,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:45,521 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:45,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1963381923, now seen corresponding path program 33 times [2021-05-02 21:40:45,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:45,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362113181] [2021-05-02 21:40:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:45,526 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:45,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554763510] [2021-05-02 21:40:45,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:45,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 21:40:45,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:45,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 21:40:45,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4888 backedges. 66 proven. 4818 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:46,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:46,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362113181] [2021-05-02 21:40:46,402 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:46,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554763510] [2021-05-02 21:40:46,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554763510] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:46,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:46,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-05-02 21:40:46,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168188014] [2021-05-02 21:40:46,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 21:40:46,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:46,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 21:40:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 21:40:46,403 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-02 21:40:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:46,983 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2021-05-02 21:40:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 21:40:46,984 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) Word has length 320 [2021-05-02 21:40:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:46,985 INFO L225 Difference]: With dead ends: 326 [2021-05-02 21:40:46,985 INFO L226 Difference]: Without dead ends: 326 [2021-05-02 21:40:46,985 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 777.0ms TimeCoverageRelationStatistics Valid=1820, Invalid=3010, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 21:40:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-02 21:40:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-02 21:40:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 250 states have (on average 1.14) internal successors, (285), 250 states have internal predecessors, (285), 39 states have call successors, (39), 38 states have call predecessors, (39), 36 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 21:40:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 361 transitions. [2021-05-02 21:40:46,989 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 361 transitions. Word has length 320 [2021-05-02 21:40:46,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:46,989 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 361 transitions. [2021-05-02 21:40:46,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-02 21:40:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 361 transitions. [2021-05-02 21:40:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-05-02 21:40:46,990 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:46,990 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:47,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 21:40:47,207 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:47,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1707120584, now seen corresponding path program 34 times [2021-05-02 21:40:47,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:47,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566053636] [2021-05-02 21:40:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:47,213 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:47,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070553974] [2021-05-02 21:40:47,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:47,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:47,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:47,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 21:40:47,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:47,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:47,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:48,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:48,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:48,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:48,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:48,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5189 backedges. 68 proven. 5117 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:48,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:48,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566053636] [2021-05-02 21:40:48,060 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:48,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070553974] [2021-05-02 21:40:48,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070553974] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:48,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:48,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-05-02 21:40:48,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132304134] [2021-05-02 21:40:48,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 21:40:48,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 21:40:48,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 21:40:48,061 INFO L87 Difference]: Start difference. First operand 326 states and 361 transitions. Second operand has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-02 21:40:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:48,656 INFO L93 Difference]: Finished difference Result 335 states and 371 transitions. [2021-05-02 21:40:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 21:40:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) Word has length 329 [2021-05-02 21:40:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:48,658 INFO L225 Difference]: With dead ends: 335 [2021-05-02 21:40:48,658 INFO L226 Difference]: Without dead ends: 335 [2021-05-02 21:40:48,658 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 816.2ms TimeCoverageRelationStatistics Valid=1926, Invalid=3186, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 21:40:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-05-02 21:40:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-05-02 21:40:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.140077821011673) internal successors, (293), 257 states have internal predecessors, (293), 40 states have call successors, (40), 39 states have call predecessors, (40), 37 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 21:40:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 371 transitions. [2021-05-02 21:40:48,662 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 371 transitions. Word has length 329 [2021-05-02 21:40:48,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:48,662 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 371 transitions. [2021-05-02 21:40:48,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-02 21:40:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 371 transitions. [2021-05-02 21:40:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-05-02 21:40:48,663 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:48,664 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:48,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 21:40:48,879 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash 784010307, now seen corresponding path program 35 times [2021-05-02 21:40:48,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:48,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354431507] [2021-05-02 21:40:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:48,885 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:48,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557029718] [2021-05-02 21:40:48,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:49,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 21:40:49,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:49,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 21:40:49,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:49,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 70 proven. 5425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:49,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:49,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354431507] [2021-05-02 21:40:49,824 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:49,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557029718] [2021-05-02 21:40:49,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557029718] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:49,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:49,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-05-02 21:40:49,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963281091] [2021-05-02 21:40:49,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 21:40:49,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 21:40:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 21:40:49,825 INFO L87 Difference]: Start difference. First operand 335 states and 371 transitions. Second operand has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-02 21:40:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:50,456 INFO L93 Difference]: Finished difference Result 344 states and 381 transitions. [2021-05-02 21:40:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 21:40:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) Word has length 338 [2021-05-02 21:40:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:50,457 INFO L225 Difference]: With dead ends: 344 [2021-05-02 21:40:50,457 INFO L226 Difference]: Without dead ends: 344 [2021-05-02 21:40:50,458 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 862.8ms TimeCoverageRelationStatistics Valid=2035, Invalid=3367, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 21:40:50,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-05-02 21:40:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-05-02 21:40:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 264 states have (on average 1.1401515151515151) internal successors, (301), 264 states have internal predecessors, (301), 41 states have call successors, (41), 40 states have call predecessors, (41), 38 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 21:40:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 381 transitions. [2021-05-02 21:40:50,462 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 381 transitions. Word has length 338 [2021-05-02 21:40:50,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:50,462 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 381 transitions. [2021-05-02 21:40:50,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-02 21:40:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 381 transitions. [2021-05-02 21:40:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-05-02 21:40:50,463 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:50,463 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 36, 36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:50,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 21:40:50,677 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 4179096, now seen corresponding path program 36 times [2021-05-02 21:40:50,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:50,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193442987] [2021-05-02 21:40:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:50,682 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:50,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722549577] [2021-05-02 21:40:50,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:50,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 21:40:50,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:50,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 21:40:50,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:50,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:50,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5818 backedges. 72 proven. 5742 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:51,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:51,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193442987] [2021-05-02 21:40:51,673 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:51,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722549577] [2021-05-02 21:40:51,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722549577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:51,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:51,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-05-02 21:40:51,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047601753] [2021-05-02 21:40:51,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 21:40:51,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 21:40:51,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 21:40:51,675 INFO L87 Difference]: Start difference. First operand 344 states and 381 transitions. Second operand has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-02 21:40:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:52,343 INFO L93 Difference]: Finished difference Result 353 states and 391 transitions. [2021-05-02 21:40:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 21:40:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) Word has length 347 [2021-05-02 21:40:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:52,345 INFO L225 Difference]: With dead ends: 353 [2021-05-02 21:40:52,345 INFO L226 Difference]: Without dead ends: 353 [2021-05-02 21:40:52,345 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 902.9ms TimeCoverageRelationStatistics Valid=2147, Invalid=3553, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 21:40:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-05-02 21:40:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-05-02 21:40:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 271 states have (on average 1.1402214022140222) internal successors, (309), 271 states have internal predecessors, (309), 42 states have call successors, (42), 41 states have call predecessors, (42), 39 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 21:40:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 391 transitions. [2021-05-02 21:40:52,349 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 391 transitions. Word has length 347 [2021-05-02 21:40:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:52,349 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 391 transitions. [2021-05-02 21:40:52,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-02 21:40:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 391 transitions. [2021-05-02 21:40:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-05-02 21:40:52,351 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:52,351 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:52,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 21:40:52,568 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:52,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1997759517, now seen corresponding path program 37 times [2021-05-02 21:40:52,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:52,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158493117] [2021-05-02 21:40:52,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:52,573 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:52,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182038351] [2021-05-02 21:40:52,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:40:52,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 21:40:52,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:52,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:52,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6146 backedges. 74 proven. 6068 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:53,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:53,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158493117] [2021-05-02 21:40:53,559 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:53,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182038351] [2021-05-02 21:40:53,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182038351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:53,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:53,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-05-02 21:40:53,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44589549] [2021-05-02 21:40:53,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 21:40:53,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 21:40:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 21:40:53,560 INFO L87 Difference]: Start difference. First operand 353 states and 391 transitions. Second operand has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-02 21:40:54,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:54,246 INFO L93 Difference]: Finished difference Result 362 states and 401 transitions. [2021-05-02 21:40:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 21:40:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) Word has length 356 [2021-05-02 21:40:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:54,247 INFO L225 Difference]: With dead ends: 362 [2021-05-02 21:40:54,247 INFO L226 Difference]: Without dead ends: 362 [2021-05-02 21:40:54,248 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 977.3ms TimeCoverageRelationStatistics Valid=2262, Invalid=3744, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 21:40:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-05-02 21:40:54,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-05-02 21:40:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.1402877697841727) internal successors, (317), 278 states have internal predecessors, (317), 43 states have call successors, (43), 42 states have call predecessors, (43), 40 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 21:40:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 401 transitions. [2021-05-02 21:40:54,252 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 401 transitions. Word has length 356 [2021-05-02 21:40:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:54,252 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 401 transitions. [2021-05-02 21:40:54,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-02 21:40:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 401 transitions. [2021-05-02 21:40:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-05-02 21:40:54,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:54,254 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:54,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:54,469 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:54,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1095092472, now seen corresponding path program 38 times [2021-05-02 21:40:54,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:54,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483460484] [2021-05-02 21:40:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:54,474 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:54,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042803634] [2021-05-02 21:40:54,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:54,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:40:54,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:54,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 21:40:54,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:54,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6483 backedges. 76 proven. 6403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:55,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:55,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483460484] [2021-05-02 21:40:55,485 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:55,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042803634] [2021-05-02 21:40:55,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042803634] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:55,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:55,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-05-02 21:40:55,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317748331] [2021-05-02 21:40:55,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 21:40:55,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:55,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 21:40:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 21:40:55,486 INFO L87 Difference]: Start difference. First operand 362 states and 401 transitions. Second operand has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-02 21:40:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:56,216 INFO L93 Difference]: Finished difference Result 371 states and 411 transitions. [2021-05-02 21:40:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 21:40:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) Word has length 365 [2021-05-02 21:40:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:56,217 INFO L225 Difference]: With dead ends: 371 [2021-05-02 21:40:56,217 INFO L226 Difference]: Without dead ends: 371 [2021-05-02 21:40:56,218 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1030.8ms TimeCoverageRelationStatistics Valid=2380, Invalid=3940, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 21:40:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-05-02 21:40:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-05-02 21:40:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 285 states have internal predecessors, (325), 44 states have call successors, (44), 43 states have call predecessors, (44), 41 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 21:40:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 411 transitions. [2021-05-02 21:40:56,221 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 411 transitions. Word has length 365 [2021-05-02 21:40:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:56,222 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 411 transitions. [2021-05-02 21:40:56,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-02 21:40:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 411 transitions. [2021-05-02 21:40:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-05-02 21:40:56,223 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:56,223 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:56,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 21:40:56,433 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:56,433 INFO L82 PathProgramCache]: Analyzing trace with hash -805993597, now seen corresponding path program 39 times [2021-05-02 21:40:56,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:56,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115201592] [2021-05-02 21:40:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:56,438 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:56,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987613917] [2021-05-02 21:40:56,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:56,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 21:40:56,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:56,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 21:40:56,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:56,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:56,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6829 backedges. 78 proven. 6747 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:57,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:57,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115201592] [2021-05-02 21:40:57,544 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:57,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987613917] [2021-05-02 21:40:57,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987613917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:57,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:57,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-05-02 21:40:57,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049938433] [2021-05-02 21:40:57,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 21:40:57,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:57,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 21:40:57,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 21:40:57,545 INFO L87 Difference]: Start difference. First operand 371 states and 411 transitions. Second operand has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-02 21:40:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:40:58,306 INFO L93 Difference]: Finished difference Result 380 states and 421 transitions. [2021-05-02 21:40:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 21:40:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) Word has length 374 [2021-05-02 21:40:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:40:58,307 INFO L225 Difference]: With dead ends: 380 [2021-05-02 21:40:58,307 INFO L226 Difference]: Without dead ends: 380 [2021-05-02 21:40:58,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1070.2ms TimeCoverageRelationStatistics Valid=2501, Invalid=4141, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 21:40:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-02 21:40:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-05-02 21:40:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.1404109589041096) internal successors, (333), 292 states have internal predecessors, (333), 45 states have call successors, (45), 44 states have call predecessors, (45), 42 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 21:40:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 421 transitions. [2021-05-02 21:40:58,312 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 421 transitions. Word has length 374 [2021-05-02 21:40:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:40:58,312 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 421 transitions. [2021-05-02 21:40:58,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-02 21:40:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 421 transitions. [2021-05-02 21:40:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-05-02 21:40:58,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:40:58,314 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 40, 40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:40:58,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:58,533 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:40:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:40:58,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1446475096, now seen corresponding path program 40 times [2021-05-02 21:40:58,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:40:58,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018124994] [2021-05-02 21:40:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:40:58,538 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:40:58,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305293630] [2021-05-02 21:40:58,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:40:58,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:40:58,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:40:58,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 21:40:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:40:58,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:58,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:40:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7184 backedges. 80 proven. 7100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:40:59,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:40:59,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018124994] [2021-05-02 21:40:59,633 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:40:59,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305293630] [2021-05-02 21:40:59,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305293630] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:40:59,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:40:59,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-05-02 21:40:59,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170752528] [2021-05-02 21:40:59,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 21:40:59,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:40:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 21:40:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 21:40:59,634 INFO L87 Difference]: Start difference. First operand 380 states and 421 transitions. Second operand has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-02 21:41:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:00,442 INFO L93 Difference]: Finished difference Result 389 states and 431 transitions. [2021-05-02 21:41:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 21:41:00,443 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) Word has length 383 [2021-05-02 21:41:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:00,444 INFO L225 Difference]: With dead ends: 389 [2021-05-02 21:41:00,444 INFO L226 Difference]: Without dead ends: 389 [2021-05-02 21:41:00,444 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1140.8ms TimeCoverageRelationStatistics Valid=2625, Invalid=4347, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 21:41:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-05-02 21:41:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-05-02 21:41:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 299 states have (on average 1.140468227424749) internal successors, (341), 299 states have internal predecessors, (341), 46 states have call successors, (46), 45 states have call predecessors, (46), 43 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 21:41:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 431 transitions. [2021-05-02 21:41:00,448 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 431 transitions. Word has length 383 [2021-05-02 21:41:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:00,448 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 431 transitions. [2021-05-02 21:41:00,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-02 21:41:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 431 transitions. [2021-05-02 21:41:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-05-02 21:41:00,450 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:00,450 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 41, 41, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:00,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:00,665 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1380990173, now seen corresponding path program 41 times [2021-05-02 21:41:00,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:00,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426245081] [2021-05-02 21:41:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:00,670 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:00,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648110828] [2021-05-02 21:41:00,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:00,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 21:41:00,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:00,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 21:41:00,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:00,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:00,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7548 backedges. 82 proven. 7462 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:01,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:01,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426245081] [2021-05-02 21:41:01,830 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:01,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648110828] [2021-05-02 21:41:01,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648110828] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:01,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:01,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-05-02 21:41:01,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637701998] [2021-05-02 21:41:01,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 21:41:01,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:01,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 21:41:01,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 21:41:01,831 INFO L87 Difference]: Start difference. First operand 389 states and 431 transitions. Second operand has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-02 21:41:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:02,670 INFO L93 Difference]: Finished difference Result 398 states and 441 transitions. [2021-05-02 21:41:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 21:41:02,670 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) Word has length 392 [2021-05-02 21:41:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:02,671 INFO L225 Difference]: With dead ends: 398 [2021-05-02 21:41:02,672 INFO L226 Difference]: Without dead ends: 398 [2021-05-02 21:41:02,672 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1174.4ms TimeCoverageRelationStatistics Valid=2752, Invalid=4558, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 21:41:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-05-02 21:41:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-05-02 21:41:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 306 states have (on average 1.1405228758169934) internal successors, (349), 306 states have internal predecessors, (349), 47 states have call successors, (47), 46 states have call predecessors, (47), 44 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 21:41:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 441 transitions. [2021-05-02 21:41:02,676 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 441 transitions. Word has length 392 [2021-05-02 21:41:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:02,676 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 441 transitions. [2021-05-02 21:41:02,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-02 21:41:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 441 transitions. [2021-05-02 21:41:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-05-02 21:41:02,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:02,678 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:02,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 21:41:02,895 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:02,895 INFO L82 PathProgramCache]: Analyzing trace with hash 175819192, now seen corresponding path program 42 times [2021-05-02 21:41:02,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:02,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439772391] [2021-05-02 21:41:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:02,900 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:02,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200374823] [2021-05-02 21:41:02,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:03,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 21:41:03,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:03,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 21:41:03,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:03,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:03,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 84 proven. 7833 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:04,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:04,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439772391] [2021-05-02 21:41:04,183 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:04,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200374823] [2021-05-02 21:41:04,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200374823] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:04,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:04,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-05-02 21:41:04,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750645062] [2021-05-02 21:41:04,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 21:41:04,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:04,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 21:41:04,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 21:41:04,184 INFO L87 Difference]: Start difference. First operand 398 states and 441 transitions. Second operand has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-02 21:41:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:05,122 INFO L93 Difference]: Finished difference Result 407 states and 451 transitions. [2021-05-02 21:41:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 21:41:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) Word has length 401 [2021-05-02 21:41:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:05,124 INFO L225 Difference]: With dead ends: 407 [2021-05-02 21:41:05,124 INFO L226 Difference]: Without dead ends: 407 [2021-05-02 21:41:05,124 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1284.9ms TimeCoverageRelationStatistics Valid=2882, Invalid=4774, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 21:41:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-02 21:41:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-05-02 21:41:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 313 states have (on average 1.1405750798722045) internal successors, (357), 313 states have internal predecessors, (357), 48 states have call successors, (48), 47 states have call predecessors, (48), 45 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 21:41:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 451 transitions. [2021-05-02 21:41:05,128 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 451 transitions. Word has length 401 [2021-05-02 21:41:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:05,129 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 451 transitions. [2021-05-02 21:41:05,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-02 21:41:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 451 transitions. [2021-05-02 21:41:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-05-02 21:41:05,130 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:05,130 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 43, 43, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:05,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 21:41:05,348 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash -915055933, now seen corresponding path program 43 times [2021-05-02 21:41:05,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:05,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593071539] [2021-05-02 21:41:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:05,354 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:05,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366290429] [2021-05-02 21:41:05,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:05,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 21:41:05,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:05,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:05,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8303 backedges. 86 proven. 8213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:06,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:06,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593071539] [2021-05-02 21:41:06,554 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:06,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366290429] [2021-05-02 21:41:06,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366290429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:06,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:06,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-05-02 21:41:06,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929929023] [2021-05-02 21:41:06,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 21:41:06,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:06,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 21:41:06,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 21:41:06,555 INFO L87 Difference]: Start difference. First operand 407 states and 451 transitions. Second operand has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-02 21:41:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:07,457 INFO L93 Difference]: Finished difference Result 416 states and 461 transitions. [2021-05-02 21:41:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 21:41:07,458 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) Word has length 410 [2021-05-02 21:41:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:07,459 INFO L225 Difference]: With dead ends: 416 [2021-05-02 21:41:07,459 INFO L226 Difference]: Without dead ends: 416 [2021-05-02 21:41:07,459 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1296.2ms TimeCoverageRelationStatistics Valid=3015, Invalid=4995, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 21:41:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-05-02 21:41:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-05-02 21:41:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.140625) internal successors, (365), 320 states have internal predecessors, (365), 49 states have call successors, (49), 48 states have call predecessors, (49), 46 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 21:41:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 461 transitions. [2021-05-02 21:41:07,469 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 461 transitions. Word has length 410 [2021-05-02 21:41:07,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:07,469 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 461 transitions. [2021-05-02 21:41:07,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-02 21:41:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 461 transitions. [2021-05-02 21:41:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-05-02 21:41:07,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:07,471 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:07,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 21:41:07,679 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1542833688, now seen corresponding path program 44 times [2021-05-02 21:41:07,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:07,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345220358] [2021-05-02 21:41:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:07,685 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:07,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511470443] [2021-05-02 21:41:07,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:07,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:41:07,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:07,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 21:41:07,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:07,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 88 proven. 8602 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:08,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:08,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345220358] [2021-05-02 21:41:08,889 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:08,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511470443] [2021-05-02 21:41:08,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511470443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:08,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:08,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-05-02 21:41:08,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242170] [2021-05-02 21:41:08,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 21:41:08,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:08,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 21:41:08,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 21:41:08,890 INFO L87 Difference]: Start difference. First operand 416 states and 461 transitions. Second operand has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-02 21:41:09,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:09,886 INFO L93 Difference]: Finished difference Result 425 states and 471 transitions. [2021-05-02 21:41:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 21:41:09,886 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) Word has length 419 [2021-05-02 21:41:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:09,887 INFO L225 Difference]: With dead ends: 425 [2021-05-02 21:41:09,887 INFO L226 Difference]: Without dead ends: 425 [2021-05-02 21:41:09,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1346.4ms TimeCoverageRelationStatistics Valid=3151, Invalid=5221, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 21:41:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-05-02 21:41:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-05-02 21:41:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 327 states have (on average 1.1406727828746177) internal successors, (373), 327 states have internal predecessors, (373), 50 states have call successors, (50), 49 states have call predecessors, (50), 47 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 21:41:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 471 transitions. [2021-05-02 21:41:09,893 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 471 transitions. Word has length 419 [2021-05-02 21:41:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:09,894 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 471 transitions. [2021-05-02 21:41:09,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-02 21:41:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 471 transitions. [2021-05-02 21:41:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-05-02 21:41:09,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:09,896 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:10,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:10,112 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1746946659, now seen corresponding path program 45 times [2021-05-02 21:41:10,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:10,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569343824] [2021-05-02 21:41:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:10,117 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:10,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014841834] [2021-05-02 21:41:10,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:10,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 21:41:10,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 21:41:10,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:10,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:10,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9094 backedges. 90 proven. 9000 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:11,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:11,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569343824] [2021-05-02 21:41:11,528 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:11,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014841834] [2021-05-02 21:41:11,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014841834] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:11,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:11,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-05-02 21:41:11,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140937638] [2021-05-02 21:41:11,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 21:41:11,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:11,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 21:41:11,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 21:41:11,529 INFO L87 Difference]: Start difference. First operand 425 states and 471 transitions. Second operand has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-02 21:41:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:12,504 INFO L93 Difference]: Finished difference Result 434 states and 481 transitions. [2021-05-02 21:41:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 21:41:12,504 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) Word has length 428 [2021-05-02 21:41:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:12,505 INFO L225 Difference]: With dead ends: 434 [2021-05-02 21:41:12,505 INFO L226 Difference]: Without dead ends: 434 [2021-05-02 21:41:12,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1402.7ms TimeCoverageRelationStatistics Valid=3290, Invalid=5452, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 21:41:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-05-02 21:41:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-05-02 21:41:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 334 states have (on average 1.1407185628742516) internal successors, (381), 334 states have internal predecessors, (381), 51 states have call successors, (51), 50 states have call predecessors, (51), 48 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-02 21:41:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 481 transitions. [2021-05-02 21:41:12,510 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 481 transitions. Word has length 428 [2021-05-02 21:41:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:12,510 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 481 transitions. [2021-05-02 21:41:12,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-02 21:41:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 481 transitions. [2021-05-02 21:41:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-05-02 21:41:12,512 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:12,512 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:12,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 21:41:12,733 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash -619812232, now seen corresponding path program 46 times [2021-05-02 21:41:12,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:12,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765711448] [2021-05-02 21:41:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:12,738 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:12,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545161608] [2021-05-02 21:41:12,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:12,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 21:41:12,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:12,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 21:41:12,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:12,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:12,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9503 backedges. 92 proven. 9407 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:14,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:14,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765711448] [2021-05-02 21:41:14,046 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:14,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545161608] [2021-05-02 21:41:14,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545161608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:14,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:14,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-05-02 21:41:14,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836758150] [2021-05-02 21:41:14,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 21:41:14,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:14,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 21:41:14,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 21:41:14,047 INFO L87 Difference]: Start difference. First operand 434 states and 481 transitions. Second operand has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-02 21:41:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:15,044 INFO L93 Difference]: Finished difference Result 443 states and 491 transitions. [2021-05-02 21:41:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 21:41:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) Word has length 437 [2021-05-02 21:41:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:15,045 INFO L225 Difference]: With dead ends: 443 [2021-05-02 21:41:15,045 INFO L226 Difference]: Without dead ends: 443 [2021-05-02 21:41:15,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1448.0ms TimeCoverageRelationStatistics Valid=3432, Invalid=5688, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 21:41:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-05-02 21:41:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-05-02 21:41:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 341 states have (on average 1.1407624633431086) internal successors, (389), 341 states have internal predecessors, (389), 52 states have call successors, (52), 51 states have call predecessors, (52), 49 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-02 21:41:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 491 transitions. [2021-05-02 21:41:15,050 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 491 transitions. Word has length 437 [2021-05-02 21:41:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:15,050 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 491 transitions. [2021-05-02 21:41:15,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-02 21:41:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 491 transitions. [2021-05-02 21:41:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-05-02 21:41:15,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:15,052 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:15,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 21:41:15,265 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash 202019331, now seen corresponding path program 47 times [2021-05-02 21:41:15,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:15,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199367722] [2021-05-02 21:41:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:15,270 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:15,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339937336] [2021-05-02 21:41:15,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:15,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 21:41:15,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:15,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 21:41:15,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:15,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:15,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 94 proven. 9823 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:16,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:16,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199367722] [2021-05-02 21:41:16,687 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:16,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339937336] [2021-05-02 21:41:16,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339937336] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:16,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:16,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-05-02 21:41:16,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978795726] [2021-05-02 21:41:16,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 21:41:16,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:16,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 21:41:16,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 21:41:16,688 INFO L87 Difference]: Start difference. First operand 443 states and 491 transitions. Second operand has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-02 21:41:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:17,744 INFO L93 Difference]: Finished difference Result 452 states and 501 transitions. [2021-05-02 21:41:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 21:41:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) Word has length 446 [2021-05-02 21:41:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:17,745 INFO L225 Difference]: With dead ends: 452 [2021-05-02 21:41:17,746 INFO L226 Difference]: Without dead ends: 452 [2021-05-02 21:41:17,746 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1519.1ms TimeCoverageRelationStatistics Valid=3577, Invalid=5929, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 21:41:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-02 21:41:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-05-02 21:41:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 348 states have (on average 1.1408045977011494) internal successors, (397), 348 states have internal predecessors, (397), 53 states have call successors, (53), 52 states have call predecessors, (53), 50 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-02 21:41:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 501 transitions. [2021-05-02 21:41:17,750 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 501 transitions. Word has length 446 [2021-05-02 21:41:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:17,750 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 501 transitions. [2021-05-02 21:41:17,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-02 21:41:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 501 transitions. [2021-05-02 21:41:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-05-02 21:41:17,752 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:17,752 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:17,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:17,964 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash 178960088, now seen corresponding path program 48 times [2021-05-02 21:41:17,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:17,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055422437] [2021-05-02 21:41:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:17,970 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:17,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252670690] [2021-05-02 21:41:17,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:18,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 21:41:18,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:18,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 21:41:18,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:18,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10348 backedges. 96 proven. 10248 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:19,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055422437] [2021-05-02 21:41:19,545 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252670690] [2021-05-02 21:41:19,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252670690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:19,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:19,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-05-02 21:41:19,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105471277] [2021-05-02 21:41:19,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 21:41:19,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:19,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 21:41:19,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 21:41:19,546 INFO L87 Difference]: Start difference. First operand 452 states and 501 transitions. Second operand has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-02 21:41:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:20,735 INFO L93 Difference]: Finished difference Result 461 states and 511 transitions. [2021-05-02 21:41:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 21:41:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) Word has length 455 [2021-05-02 21:41:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:20,737 INFO L225 Difference]: With dead ends: 461 [2021-05-02 21:41:20,737 INFO L226 Difference]: Without dead ends: 461 [2021-05-02 21:41:20,737 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1629.7ms TimeCoverageRelationStatistics Valid=3725, Invalid=6175, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 21:41:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-05-02 21:41:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2021-05-02 21:41:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 355 states have (on average 1.1408450704225352) internal successors, (405), 355 states have internal predecessors, (405), 54 states have call successors, (54), 53 states have call predecessors, (54), 51 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-02 21:41:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 511 transitions. [2021-05-02 21:41:20,741 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 511 transitions. Word has length 455 [2021-05-02 21:41:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:20,742 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 511 transitions. [2021-05-02 21:41:20,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-02 21:41:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 511 transitions. [2021-05-02 21:41:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-05-02 21:41:20,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:20,744 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:20,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-02 21:41:20,953 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:20,953 INFO L82 PathProgramCache]: Analyzing trace with hash 353251747, now seen corresponding path program 49 times [2021-05-02 21:41:20,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:20,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086103133] [2021-05-02 21:41:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:20,958 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:20,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012115167] [2021-05-02 21:41:20,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:21,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 21:41:21,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:21,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:21,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10784 backedges. 98 proven. 10682 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:22,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:22,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086103133] [2021-05-02 21:41:22,413 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:22,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012115167] [2021-05-02 21:41:22,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012115167] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:22,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:22,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2021-05-02 21:41:22,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002519354] [2021-05-02 21:41:22,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 21:41:22,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:22,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 21:41:22,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 21:41:22,414 INFO L87 Difference]: Start difference. First operand 461 states and 511 transitions. Second operand has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-02 21:41:23,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:23,619 INFO L93 Difference]: Finished difference Result 470 states and 521 transitions. [2021-05-02 21:41:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 21:41:23,620 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) Word has length 464 [2021-05-02 21:41:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:23,637 INFO L225 Difference]: With dead ends: 470 [2021-05-02 21:41:23,637 INFO L226 Difference]: Without dead ends: 470 [2021-05-02 21:41:23,637 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1686.9ms TimeCoverageRelationStatistics Valid=3876, Invalid=6426, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 21:41:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-02 21:41:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-05-02 21:41:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 362 states have (on average 1.1408839779005524) internal successors, (413), 362 states have internal predecessors, (413), 55 states have call successors, (55), 54 states have call predecessors, (55), 52 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-02 21:41:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 521 transitions. [2021-05-02 21:41:23,641 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 521 transitions. Word has length 464 [2021-05-02 21:41:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:23,642 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 521 transitions. [2021-05-02 21:41:23,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-02 21:41:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 521 transitions. [2021-05-02 21:41:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-05-02 21:41:23,644 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:23,644 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 50, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:23,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:23,860 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1070552264, now seen corresponding path program 50 times [2021-05-02 21:41:23,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:23,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529805149] [2021-05-02 21:41:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:23,865 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:23,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569117972] [2021-05-02 21:41:23,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:24,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:41:24,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-02 21:41:24,028 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 21:41:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 21:41:24,106 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 21:41:24,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 21:41:24,700 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 21:41:24,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 21:41:25,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 09:41:25 BasicIcfg [2021-05-02 21:41:25,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 21:41:25,029 INFO L168 Benchmark]: Toolchain (without parser) took 70514.66 ms. Allocated memory was 204.5 MB in the beginning and 476.1 MB in the end (delta: 271.6 MB). Free memory was 170.3 MB in the beginning and 235.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 207.1 MB. Max. memory is 8.0 GB. [2021-05-02 21:41:25,029 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 187.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 21:41:25,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.25 ms. Allocated memory is still 204.5 MB. Free memory was 170.1 MB in the beginning and 160.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 21:41:25,029 INFO L168 Benchmark]: Boogie Preprocessor took 67.41 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 188.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-05-02 21:41:25,029 INFO L168 Benchmark]: RCFGBuilder took 290.81 ms. Allocated memory is still 204.5 MB. Free memory was 187.9 MB in the beginning and 173.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 21:41:25,029 INFO L168 Benchmark]: IcfgTransformer took 14.80 ms. Allocated memory is still 204.5 MB. Free memory was 173.2 MB in the beginning and 171.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 21:41:25,029 INFO L168 Benchmark]: TraceAbstraction took 69971.62 ms. Allocated memory was 204.5 MB in the beginning and 476.1 MB in the end (delta: 271.6 MB). Free memory was 171.1 MB in the beginning and 235.8 MB in the end (delta: -64.7 MB). Peak memory consumption was 207.9 MB. Max. memory is 8.0 GB. [2021-05-02 21:41:25,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 187.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 165.25 ms. Allocated memory is still 204.5 MB. Free memory was 170.1 MB in the beginning and 160.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.41 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 188.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 290.81 ms. Allocated memory is still 204.5 MB. Free memory was 187.9 MB in the beginning and 173.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 14.80 ms. Allocated memory is still 204.5 MB. Free memory was 173.2 MB in the beginning and 171.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 69971.62 ms. Allocated memory was 204.5 MB in the beginning and 476.1 MB in the end (delta: 271.6 MB). Free memory was 171.1 MB in the beginning and 235.8 MB in the end (delta: -64.7 MB). Peak memory consumption was 207.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=52, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] EXPR counter++ VAL [\old(counter)=0, counter=12, counter++=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] EXPR counter++ VAL [\old(counter)=0, counter=13, counter++=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] EXPR counter++ VAL [\old(counter)=0, counter=14, counter++=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] EXPR counter++ VAL [\old(counter)=0, counter=15, counter++=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] EXPR counter++ VAL [\old(counter)=0, counter=16, counter++=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] EXPR counter++ VAL [\old(counter)=0, counter=17, counter++=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] EXPR counter++ VAL [\old(counter)=0, counter=18, counter++=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] EXPR counter++ VAL [\old(counter)=0, counter=19, counter++=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] EXPR counter++ VAL [\old(counter)=0, counter=20, counter++=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] EXPR counter++ VAL [\old(counter)=0, counter=21, counter++=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] EXPR counter++ VAL [\old(counter)=0, counter=22, counter++=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=22] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=22] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] EXPR counter++ VAL [\old(counter)=0, counter=23, counter++=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=23] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=23] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] EXPR counter++ VAL [\old(counter)=0, counter=24, counter++=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=24] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=24] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] EXPR counter++ VAL [\old(counter)=0, counter=25, counter++=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] EXPR counter++ VAL [\old(counter)=0, counter=26, counter++=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=26] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=26] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] EXPR counter++ VAL [\old(counter)=0, counter=27, counter++=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=27] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=27] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] EXPR counter++ VAL [\old(counter)=0, counter=28, counter++=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=28] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=28] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] EXPR counter++ VAL [\old(counter)=0, counter=29, counter++=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] EXPR counter++ VAL [\old(counter)=0, counter=30, counter++=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=30] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=30] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] EXPR counter++ VAL [\old(counter)=0, counter=31, counter++=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=31] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=31] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] EXPR counter++ VAL [\old(counter)=0, counter=32, counter++=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=32] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=32] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] EXPR counter++ VAL [\old(counter)=0, counter=33, counter++=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] EXPR counter++ VAL [\old(counter)=0, counter=34, counter++=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=34] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=34] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] EXPR counter++ VAL [\old(counter)=0, counter=35, counter++=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=35] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=35] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] EXPR counter++ VAL [\old(counter)=0, counter=36, counter++=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=36] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=36] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] EXPR counter++ VAL [\old(counter)=0, counter=37, counter++=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] EXPR counter++ VAL [\old(counter)=0, counter=38, counter++=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=38] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=38] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] EXPR counter++ VAL [\old(counter)=0, counter=39, counter++=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=39] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=39] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] EXPR counter++ VAL [\old(counter)=0, counter=40, counter++=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=40] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=40] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=41, counter++=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=42, counter++=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=42] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=42] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=43, counter++=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=43] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=43] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=44, counter++=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=44] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=44] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=45, counter++=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=46, counter++=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=46] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=46] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=47, counter++=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=47] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=47] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=48, counter++=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=48] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=48] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=49, counter++=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=50, counter++=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=50] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=50] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=51, counter++=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] COND FALSE !(counter++<50) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=51] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 69820.1ms, OverallIterations: 54, TraceHistogramMax: 51, EmptinessCheckTime: 63.1ms, AutomataDifference: 22964.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2592 SDtfs, 5046 SDslu, 11351 SDs, 0 SdLazy, 7598 SolverSat, 1296 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4638.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13416 GetRequests, 10843 SyntacticMatches, 0 SemanticMatches, 2573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20857 ImplicationChecksByTransitivity, 29860.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=53, InterpolantAutomatonStates: 2672, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 232.9ms AutomataMinimizationTime, 53 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 805.0ms SsaConstructionTime, 4158.5ms SatisfiabilityAnalysisTime, 28271.3ms InterpolantComputationTime, 12722 NumberOfCodeBlocks, 12722 NumberOfCodeBlocksAsserted, 687 NumberOfCheckSat, 12196 ConstructedInterpolants, 0 QuantifiedInterpolants, 36097 SizeOfPredicates, 1281 NumberOfNonLiveVariables, 34790 ConjunctsInSsa, 2736 ConjunctsInUnsatCore, 53 InterpolantComputations, 2 PerfectInterpolantSequences, 2657/181514 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...